GASKETS

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Hoffman-Kane uses the Atoms Flash Cutter to cut our gaskets with precision and speed.

ATOM’s automated cutting systems cut with extreme precision and repeat ability, to within +/- 0.1mm on most materials. Engineered and designed to cut the hardest materials used in the petro-chemical, automotive, aerospace, composites & technical textiles, & packaging industries like compressed non asbestos, 1-2 layer steel inserted graphite, dense rubber, cross linked polyethylene foam, Kevlar, carbon fiber, plastics, and many more.

ANSI Gaskets

The ANSI (American National Standards Institute) provides exact specifications for fluid sealing gaskets of all types. These specifications dictate dimensions, tolerances, I.D., O.D., the number, size, and location of bolt holes, and other features of gaskets for a vast array of specific applications.

ANSI standards, along with our Atom Flashcutter system, make it easy for us to create precision gaskets that meet your requirements. Simply specify the ANSI standard or pattern you need, the material, and the quantity, and we will produce the gaskets you need, quickly and efficiently.

 

Special Cut Custom Gaskets

Our automated Atom Flashcutter also makes it easy for us to provide custom gaskets in any shape, size, and material your application requires. The CNC-operated Atom Flashcutter works with CAD, DXF, and DIE files—provide us with your completed design drawings and we will deliver custom fluid sealing gaskets that perfectly match your specifications.

 
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COMPRESSED NON-ASBESTOS

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KLINGERSIL® C-4201
  • Synthetic Fiber

  • Nitrile Binder

  • Excellent Resistance to Oil & Solvents

  • Good Anti-Stick Properties

  • Excellent OEM Material

KLINGERSIL® C-4300
  • Synthetic Fiber

  • Nitrile Binder

  • Good Sealability

  • Good Chemical Resistance

  • General Purpose Sheet

KLINGERSIL® C-4324
  • Recycled Fiberglass & Aramid Blend

  • Nitrile Binder

  • Low Pressure Steam, Water & Gases

  • Good for Oils and Fuels

KLINGERSIL® C-4401
  • Synthetic Fiber

  • Nitrile Binder

  • Excellent Sealability

  • Excellent Chemical Resistance

  • Good Creep Relaxation

  • General Purpose Sheet

KLINGERSIL® C-4430
  • Fiberglass and Aramid Fibers

  • Nitrile Binder

  • Excellent Steam Sheet

  • Excellent Chemical Resistance

  • Good Creep Relaxation

  • General Purpose Sheet

KLINGERSIL® C-4433
  • Fiberglass, Aramid & Inorganic Fibers

  • Nitrile Binder

  • Ultimate Steam Sheet

  • Outstanding Load Bearing

  • Excellent Creep Relaxation

  • Best General Purpose Sheet

KLINGERSIL® C-4500
  • Carbon Fiber

  • Nitrile Binder

  • High Temperature

  • High Internal Pressure

  • Good Steam Sheet

  • Suitable for a Wide Range of Chemical Applications

KLINGERSIL® C-5400
  • Synthetic Fiber

  • Neoprene Binder

  • Chemically Stable

  • Good Anti-Stick Properties

KLINGERSIL® C-6327
  • Synthetic Fiber

  • Modified SBR Binder

  • Controlled Swell

  • Use for Low Temperatures and Low Pressures

  • Good with Low Bolt Loads

KLINGERSIL® C-6400
  • Synthetic Fiber

  • SBR Binder

  • Good Anti-Stick Properties

  • Good Steam Sheet

KLINGERSIL® C-7400
  • Synthetic Fiber

  • EPDM Binder

  • Moderate Caustics and Acids

  • Good Oil Swell Characteristics

  • Excellent Aging Properties

  • Good in Light Duty Steam

KLINGERSIL® C-8200
  • Synthetic Fiber

  • Hypalon® Binder

  • Acid Resistant

  • Good Oil-Fuel Resistance

  • Good Gas Sealability

  • No Color Added

 

MILAM MICA

MILAM MICA PSS 130
  • Type PSS

  • High Quality Mica Sheet

  • Laminated on Pegged Stainless Steel Insert

  • All Milam laminates are suitable for use in hot, dry gas applications such as exhaust manifolds, turbines, turbo chargers and air heat exchangers.

MILAM MICA PSS 150
  • Type PSS

  • High Quality Mica Sheet

  • Laminated on Pegged Stainless Steel Insert

  • All Milam laminates are suitable for use in hot, dry gas applications such as exhaust manifolds, turbines, turbo chargers and air heat exchangers.

MILAM MICA PSS 300
  • Type PSS

  • High Quality Mica Sheet

  • Laminated on Pegged Stainless Steel Insert

  • All Milam laminates are suitable for use in hot, dry gas applications such as exhaust manifolds, turbines, turbo chargers and air heat exchangers.

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KLINGER® THERMICA
  • Universal Gasket Material

  • Nitrile Binder for improved flexibility

  • Mica reinforced

  • Excellent Stability at High Temperatures

  • Easy Handling and Fabrication

  • Good for Oils, Fuels, Caustics, Steam, and Hydrocarbons

BEATER EDITION

 
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ML-5270
  • Thermoseal ML-5270 is a high performance synthetic fiber and polychloroprene binder gasket material that is resistant to refrigerants and oil mixtures. Its unique Multi-Layer Technology structure provides exceptional low flange pressure sealability with exceptional torque retention. Multi-Layer Technology sheet products consist of a reinforced high density core with conformable sealing layers on each side. Typical applications include gaskets in hermetic and semi-hermatic compressors and oil pan gaskets in heavy-duty diesel engines with intermittent operating temperatures up to 350° F (177° C).

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ML-N102
  • Thermoseal ML-N102 is a high performance synthetic fiber and nitrile butadiene binder gasket material with good resistance to refrigerants and lubricating oils. Its unique Multi-Layer Technology structure provides exceptional low flange pressure sealability with exceptional torque retention. Multi-Layer Technology sheet products consist of a reinforced high density core with conformable sealing layers on each side. Typical applications include heavy-duty diesel engines and compressors with intermittent operating temperatures up to 450° F (232° C).

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ML-N562
  • Thermoseal ML-N562 is a synthetic fiber and nitrile butadiene gasket material designed for difficult sealing applications with very low flange pressures or very rough surface finishes. It combines Multi-Layer Technology structure for exceptional low flange pressure sealability and exceptional torque retention together with a more compressible core. Multi-Layer Technology sheet products consist of a reinforced high density core with conformable sealing layers on each side. ML-N562 provides heat and chemical resistance in coolant, lubricant, and hot air applications. Typical applications include automotive, marine, and small engine applications with intermittent operating temperatures up to 500° F (260° C).

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ML-S723
  • Thermoseal ML-S723 is a controlled-swell gasket material intended for heavy-duty applications. ML-S723's blended styrene butadiene and natural rubber binder provides exceptional sealability and conformability with low creep relaxation. Thickness increase, in the presense of oils and fuels, aids the sealing of irregular flange surfaces. Its unique Multi-Layer Technology structure provides exceptional low flange pressure sealability with exceptional torque retention. Multi-Layer Technology sheet products consist of a reinforced high density core with conformable sealing layers on each side. Typical applications include diesel engine oil pan gaskets and gear plate and rear seal carrier gaskets with intermittent operating temperatures up to 350° F (177° C).

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RG-N100
  • Thermoseal RG-N100 is a nitrile butadiene rubber, reinforced cellulose fiber and mineral filler general purpose gasket material. Continuous roll lengths allow efficient and economical fabrication with high speed die cutting equipment. Its low density provides good conformability in sealing fuels, oils, and water in applications such as automobile water pumps, miscellaneous cover gaskets, and many small engine applications. RG-N100 is suitable for applications with intermittent operating temperatures up to 350° F (177° C).

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RG-N120
  • Thermoseal RG-N120 is a reinforced cellulose gasket material with a nitrile butadiene rubber binder and inorganic fillers that provides a very good crush resistance at high flange pressures. Continuous roll lengths allow efficient and economical fabrication with high speed die cutting equipment. RG-N120 seals oil, water, and coolants well in applications such as small engine intake and cover gaskets, automotive water pump and throttle body gaskets and similar applications with intermittent operating temperatures up to 350° F (177° C).

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RG-S140
  • Thermoseal RG-S140 is a controlled-swell gasket material that provides excellent sealing where initial gasket conformability is required to compensate for flange out of flatness or roughness. After establishing initial sealability, the styrene butadiene binder fully vulcanizes with time and heat of component operation to provide long lasting performance. RG-S140 contains a unique blend of aramid, mineral, and cellulose fibers as well as mineral fillers to provide enhanced crush and temperature resistance. A factory applied release coating on both sides aids in flange removal. Continuous roll lengths allow efficient and economical fabrication with high speed die cutting equipment. Typical applications include gaskets for sealing hot oil or coolant in machinery including small engines and automotive and heavy duty diesel engines with intermittent operating temperatures up to 550° F (288° C).

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RG-P160
  • Thermoseal RG-P160 is a blended fiber and polychloroprene rubber gasket material with mineral fillers. A factory applied release coating on both sides aid in flange removal. Continuous roll lengths allow efficient and economical fabrication with high speed die cutting equipment. RG-P160 provides excellent sealing of oils, alcohols, and refrigerants in applications as varied as hermetic compressors and heavy duty diesel engines. It is also well suited for general automotive sealing applications such as water pump, front cover and similar applications with demand for low flange pressure sealability and torque retentiion. Suitable for applications with intermittent operating temperatures up to 400° F (204° C).

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RG-S160
  • Thermoseal RG-S160 offers exceptional sealability and crush resistance in a wide range of applications. RG-S160 is composed of a blend of aramid, mineral, and cellulose fibers and graphite and other inorganic fillers with a styrene butadiene binder. A factory applied release coating on both sides aids in flange removal. Continuous roll lengths allow efficient and economical fabrication with high speed die cutting equipment. Typical applications range from power sport and other small engine gaskets to heavy duty diesel service with intermittent operating temperatures up to 550° F (288° C).

HIGH PERFORMANCE

 
KLINGER® QUANTUM
  • HNBR Binder

  • Synthetic Fiber

  • High Performance with Outstanding High-Temperature Properties

  • Maintains Flexibility at High Temperatures

  • Suitable with a Broad Range of Media

  • Simple Handling and Processing

  • FDA Compliant when installed ubranded

KLINGERTOP-SIL-ML1
  • Revolutionary combination of synthetic fibers and different elastomers bound in a Multi-Layer structure

  • Extended service life and less leakage at high temperatures

  • High residual flexibility

  • Delayed ageing

  • Less creep

  • High permissible load

KLINGERSIL® C-4439
  • Fiberglass, Aramid & Inorganic Fibers

  • Nitrile Binder

  • High Temperature & Stress

  • Vibration

  • Galvanized Low Carbon Steel Insert

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KLINGERSIL® C-4408
  • Synthetic Fiber

  • Nitrile Binder

  • High Temperature & Stress

  • Fluctuating Temperatures & Pressures

  • Vibration

  • Low Carbon Steel Woven Mesh Insert

KLINGERSIL® C-4409
  • Synthetic Fiber

  • Nitrile Binder

  • High Temperature & Stress

  • Excellent in Hot Gases

  • Replaces Spiral Wounds

  • Vibration

  • Galvanized Low Carbon Steel Insert

KLINGERSIL® C-4509
  • Carbon Fiber

  • Nitrile Binder

  • Good in High Load Applications

  • Vibration

  • Galvanized Low Carbon Steel Insert

THERMOSEAL® WATERSIL
  • Specially formulated compressed gasket material based on NBR and aramid fiber, WaterSIL is a universal high-pressure gasket material that is certified to NSF 61 and meets strict chemical leaching requirements.

  • Applications: NSF/ANSI 61 certified gasket material for use in potable drinking water systems and fixtures for public drinking water, food and beverage, hospitality and plumbing supplies.

 

PTFE

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KLINGER® TC-1003
  • KLINGER-tc-1003 is a high quality, yet cost-effective modified PTFE gasket material with glass spheres. A proprietary pressure-sintering and blending process combined with the highest quality raw materials produces a reinforced PTFE sheet that offers superior sealability, excellent torque retention, and reduced creep relaxation. Gaskets cut from this material are exceptionally effective when lower bolt loads are needed to effect a seal.

  • Uses include moderate concentrations of acids and caustics, chlorine, hydrocarbons, solvents, hydrogen peroxide, refrigerants, cryogenics and all concentrations of sulfuric acid.

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KLINGER® TC-1005
  • KLINGER-tc-1005 is a high quality, yet cost-effective modified PTFE gasket material made with silica. A proprietary pressure-sintering and blending process combined with the highest quality raw materials produces a reinforced PTFE sheet that offers superior sealability, excellent torque retention, and reduced creep relaxation. Gaskets cut from this material are exceptionally effective when the reliability of a low deforming material is required.

  • Particularly suited for use in extremely caustic environments such as strong acids (except hydrofluoric), solvents, hydrocarbons, steam, chlorine, cryogenics, and all concentrations of sulfuric acid.

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KLINGER® TC-1006
  • KLINGER-tc-1006 is a high quality, yet cost-effective chemically modified PTFE gasket material that is good to 550°F. A proprietary pressure-sintering and blending process combined with the highest quality raw materials produces a reinforced PTFE sheet that offers superior sealability, excellent torque retention, and reduced creep relaxation.

  • Gaskets cut from this material are suitable for use in strong caustics (sodium hydroxide such as black liquor), moderate acids, chlorine, hydrocarbons, and cryogenics.

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KLINGER® TOP-CHEM 2000
  • Fire Tested - API 6FA

  • Universal application use in the chemical and petrochemical industries

  • FDA compatible

  • Ideal for higher temperatures and pressures

  • Holds shape for thermal cycles

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KLINGER® TOP-CHEM 2003
  • Ideal for low bolt applications or where flanges are delicate

  • Excellent chemical resistance to acidic and alkaline attack

  • Highly compressible

  • FDA compatible

  • Ideal for higher temperatures and pressures

  • Holds shape for thermal cycles

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KLINGER® TOP-CHEM 2005
  • Economical alternative when service conditions are moderate

  • Suitable for a wide range of applications in the chemical industries

  • Excellent chemical resistance in strongly acidic applications

  • FDA compatible

  • Holds shape for thermal cycles

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KLINGER® TOP-CHEM 2006
  • FDA compatible

  • Good resistance in strong alkaline applications

  • Good choice for a broad range of chemical process applications

  • Free of pigments

THERMOSEAL® SOFTCHEM
  • Thermoseal® soft-chem® expanded PTFE sealing material provides excellent corrosion resistance and impermeability along with superior creep resistance and sealability for use in all types of applications. The material's high compressibility enables it to deform under load and conform to irregularities in flange faces for a tight seal with low, minimum sealing stress. Standardizing with it also helps to reduce maintenance, simplify inventory, and save money.

  • Can be used with more fragile piping systems

  • Ideal for boiler applications because it's largely unaffected by steam or condensate for longer life and trouble-free sealing

  • BAM approval for gaseous oxygen

  • Indefinite self life

  • FDA compliant

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PTFE VIRGIN TEFLON
  • PTFE (polytetrafluoroethylene), is a synthetic fluoropolymer and the most chemically resistant plastic known.  It is able to handle a wide range of applications and conforms to both AMS and FDA specifications, making it suitable for aerospace, medical, and food production industries.

 
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DURLON® 9000
  • Durlon® 9000 is for use in process piping and equipment in chemical, pulp & paper, food & beverage and other general industrial applications where resistance to highly aggressive chemicals is required. In addition, the shape of the fillers do not allow wicking which can cause corrosion on flange surfaces and conforms to FDA requirements. And has achieved numerous certifications: WRAS (Water Regulations Advisory Scheme) Approved Material, USP Class VI, FDA and (EC) 1935/2004 & EU (10/2011) compliant, BAM oxygen service, TA-luft (VDI Guideline 2440), ABS-PDA & Pamphlet 95, the chlorine institute, DNV-GL. And has passed the API 6FA fire test.

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DURLON® 9000N
  • Durlon® 9000N is for use in process piping and equipment in chemical, pulp & paper, food & beverage and other general industrial applications where resistance to highly aggressive chemicals is required. In addition, the shape of the fillers do not allow wicking which can cause corrosion on flange surfaces and conforms to FDA requirements.

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DURLON® 9002
  • Durlon® 9002 is an adaptation of the original glass-filled formula to better meet extreme cryogenic demands. Durlon® 9002 has passed both gaseous and liquid oxygen tests up to 260°C (500°F) at 52 bar (754 psi) using BAM standards and LOX Mechanical Impact Sensitivity (ASTM G86 & ISO 21010), passing with zero reactions out of twenty tests (0/20) at a test reaction frequency of 0%

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DURLON® 9200
  • Durlon® 9200 is a filled PTFE gasket material designed for use in aggressive chemicals. Including caustics, hydrogen peroxide, sodium hypochlorite, nitric acid, liquors and digester in pulp and paper service. Applications In the chemical, pharmaceutical and plastics industries include butadiene, hydrofluoric acid, vinyl chloride, methyl methacrylates, and styrene. It is also used extensively in railroad tank-car applications and can be used where resistance to highly aggressive chemicals is required. Style 9200 (granite white, branded) conforms to FDA requirements.

  • Note: That as a class, PTFE gasket materials are not recommended in liquid oxygen services where there is thermal cycling due to thermal shock and the difference of the coefficient of expansion between PTFE and steel.

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DURLON® 9400
  • Durlon® 9400 is a high performance filled PTFE gasket material designed for use in piping and equipment, chemical, and other general industrial applications where resistance to highly aggressive chemicals (including hydrofluoric acid) is required. Durlon® 9400 can also be used as the gasket of choice for anhydrous hydrogen fluoride (AHF) in railroad tank cars and a good alternative for use in plants where barium sulfate filled PTFE may not be suitable.

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DURLON® 9600
  • Durlon® 9600 is an expanded PTFE gasket, made with only pure PTFE resins, designed for use in process piping and equipment, in chemical, pulp and paper, food and beverage and other general industrial applications where resistance to highly aggressive chemicals is required. Durlon® 9600 is also suitable for sealing flanges with irregular surfaces. It will not exhibit the cold flow problems associated with virgin PTFE, or the hardness problems of some filled PTFE products. It has excellent sealability, cuts easily and separates cleanly from flanges after use. This material is FDA compliant, ABS-PDA & USP Class VI certified.

 
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TEALON TF1570
  • Tealon TF1570 is filled with glass microspheres and is suitable for aggressive chemical applications. It meets FDA conformance for service within food and pharmaceutical applications. TF1570 is the preferred material for fragile flanges, glass lined equipment or other applications that require higher compressibility.

  • Approvals: DVGW - TA-Luft - FDA

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TEALON TF1580
  • Tealon TF1580 is filled with barium sulfate and is suitable for strong caustic fluids. It meets FDA conformance for service within food and pharmaceutical applications. 1580 can be used in a wide range of applications due to its vast resistance to most chemical products. It is compatible with strong acids along with strong caustics, making it the most diverse material within the Tealon family. With the off-white color of 1580, this material is also suitable for processes where contamination is not tolerated. Tealon 1580 meets and has been approved by BAM for oxygen service.

  • Approvals: DVGW — TA-Luft — FDA — BAM — Chlorine Institute

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TEALON TF1590
  • Tealon TF1590 is filled with silica and meets a wide range of aplications. It is suitable for general service, strong acids and moderate caustic solutions. It meets FDA conformance for service within food and pharmaceutical applications. TF1590 has easily passed the Hot Compression Test with outstanding results.

  • Approvals: DVGW — TA-Luft — FDA — Chlorine Institute

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TF 1572 SAN
  • TEALON TF 1572 SAN is suitable for service with a wide variety of aggressive media, but is specifically formulated to allow compliance for drinking water system components with NSF-61, from source to tap. Certification to NSF-61 provides assurance to a highest level that TF 1572 SAN is safe for use in drinking water service. The high compressibility of this style makes it particularly suitable for use with stress sensitive and/or fragile flanged joints, e.g. glass, ceramics, plastic, etc.

  • Isolation:

  • An added benefit is that TF 1572 SAN has a strong dielectric rating, making it suitable for isolation kit applications.

  • Construction

  • TEALON TF 1572 SAN is a structured PTFE - Gasket - Sheet manufactured by a unique process which provides a high level of fibrillation to overcome the creep relaxation and cold flow problems associated with normal (skived or molded) PTFE sheets. This style is produced from virgin PTFE resin filled with hollow glass microspheres.

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24SH ePTFE EXPANDED TEFLON
  • TEADIT® 24SH is a large gasket sheet produced from 100% pure, multi-directionally expanded PTFE.

  • Universally employable gasket sheet for all applications. It is suitable for all types of flanges, nearly all media, a wide temperature range and for applications with the toughest demands on purity. It is inherently clean and non-toxic.

  • Gaskets of multi-directionally expanded PTFE have exceptional mechanical strength which allows operation with minimal creep at elevated temperatures.

  • The excellent malleability of TEADIT® 24SH makes repairing small damage and/or irregularities of the sealing area (flange surface) unnecessary.

  • Gaskets cut from TEADIT® 24SH are dimensionally stable, i. e. they do not get wider when compressed. This allows narrow flange faces to be sealed safely.

  • TEADIT® 24SH is quick and simple to install. The used gasket can be removed easily and without residue.

  • Approvals

  • TA-Luft / Blow-Out-Test VDI 2200 / FDA / USP Plastic Class VI / WRc / BAM / AREVA

 

FLEXIBLE GRAPHITE

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2661/1661 FLEXIBLE GRAPHITE SHEET (316SS FOIL INSERT)
  • Style 2661/1661 flexible graphite sheet has pressure-temperature sealability capabilities that are far superior to all compressed fiber reinforced sheet materials. It is resistant to chemical attack by virtually all organic and inorganic fluids with the exception of concentrated, highly oxidizing acids. Gaskets cut from Style 2661/1661 flexible graphite sheet seal with low to moderate bolt loads and because of very low creep relaxation, re-torquing is rarely required. Flexible graphite conforms to irregular flange sealing surfaces and readily flows into flange irregularities enabling it to seal both smooth and coarse surface finishes

  • Construction

  • Style 2661/1661 is a flexible graphite sheet reinforced with a 316SS foil, .002” thick. The flexible graphite sheet is made from exfoliated graphite flake which is compressed into foil by a carefully controlled calendaring process. In this process, the expanded flake particles are mechanically locked together without the use of fibers, binders or other additives. Sheets of graphite foil are then adhesive bonded and laminated to the required thickness with the 316SS foil core in the center.

  • CLICK HERE FOR 2661/1661 DATA SHEET

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2663/1663 FLEXIBLE GRAPHITE SHEET (316SS TANGED CORE)
  • Style 2663/1663 flexible graphite sheet has pressure-temperature sealability capabilities that are far superior to all compressed fiber reinforced sheet materials. It is resistant to chemical attack by virtually all organic and inorganic fluids with the exception of concentrated, highly oxidizing acids. Gaskets cut from Style 2663/1663 flexible graphite sheet seal with low to moderate bolt loads and because of very low creep relaxation, re-torquing is rarely required. Flexible graphite conforms to irregular flange sealing surfaces and readily flows into flange irregularities enabling it to seal both smooth and coarse surface finishes

  • Construction

  • Style 2663/1663 is a flexible graphite sheet reinforced with a 316SS tanged core, .005” thick. The flexible graphite sheet is made from exfoliated graphite flake which is compressed into foil by a carefully controlled calendering process. In this process, the expanded flake particles are mechanically locked together without the use of fibers, binders or other additives. Sheets of graphite foil are then adhesive bonded and laminated to the required thickness with the 316SS tanged core in the center.

  • CLICK HERE FOR 2663/1663 DATA SHEET

 

SEMI-METALLIC GASKETS

Hoffman-Kane spiral wound gaskets have the ability to recover under the action of fluctuating loads caused by process fluid pressure and temperature changes, flange face temperature variations, flange rotation, bolt stress relaxation and creep. The gasket sealing element consists of a pre-formed metallic winding strip with layers of a softer, more compressible sealing material which, during compression, is densified and flows to fill imperfections in the flange surfaces. The metal strip holds the filler giving the gasket mechanical resistance and resilience. 

Hoffman-Kane spiral wound gasket dimensions available in accordance with ASME B16.20 used with ASME B16.5 or ASME B16.47 flanges. DIN, BS10, and JIS standards are available upon request. Custom special gaskets are also available upon request.

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HKWO SPIRAL WOUND GASKET W/O INNER RING
  • Style HKWO– Is comprised of a sealing element and outer metal ring. The outer ring assists in locating the gasket on the mating flange faces and prevents over compression of the sealing element ensuring optimum sealing performance. Style HKWO gaskets are suitable for use on raised and flat faced flanged connections. Style HKWO gaskets are suitable for use in mild to moderate service conditions.

HKWOI SPIRAL WOUND GASKET W/ INNER RING
  • Style HKWOI – In addition to an outer metal ring the HKWOI style gasket is fitted with an inner metal ring, constraining the sealing element on both internal and external diameters. The inner ring functions as an additional compression stop and prevents inner buckling of the sealing element. It also creates a physical barrier between the sealing element and process stream shielding from heat and media while preventing erosion. Style HKWOI gaskets are suitable for use on raised and flat faced flanged connections and moderate to severe service conditions.

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HKW SPIRAL WOUND GASKET WINDING ONLY
  • Style HKW – Is comprised of a sealing element, additional plies of metal are used at the start and termination of the winding process improving stability and sealing performance. Unlike other styles of spiral wound gasket compression of the sealing element is controlled by the use of the correct flange face configuration, style HKW gaskets are suitable for use on tongue and groove, male and female and flat to groove flanged connections.

HKWI  SPIRAL WOUND GASKET W/ INNER RING
  • Style HKWI – Is comprised of a sealing element and inner metal ring. The inner ring functions as both a compression stop and creates a physical barrier between the sealing element and media stream. The inner ring is also designed to reduce turbulent flow, minimising flange erosion and prevents the build up debris in the annular space between the pipe bore and internal diameter of the gasket. Style HKWI gaskets are suitable for use on male and female (spigot and recess) flanged connections.

SPIRAL WOUND GASKETS

Dimensions to ASME B16.20 to suit ASME B16.5 Flanges

  • All dimensions are in inches.

  • Figures stated are for information only. Please refer to the current version of the original standards for dimensional information. The gasket thickness tolerance is +/- .13 mm measured across the metallic portion of the gasket, not including the filler, which may protrude slightly beyond the metal.

  • The inner-ring thickness shall be 0.117 in to 0.131 in For sizes NPS ½ through NPS 3, the insider diameter tolerance is +/- 0.03in; for larger sizes the inside diameter tolerance is +/- 0.06in.

  • NOTES

  • 1. The gasket outside diameter tolerance for NPS ½ through to NPS 8 is +/-0.03in for NPS 10 through NPS 24 +0.06in – 0.03in

  • 2. The gasket inside diameter tolerance for NPS ½ through to NPS 8 is +/-0.016in; for NPS 10 through NPS 24 +/- 0.03in.

  • 3. The centering ring outside diameter tolerance is +/-0.03in

  • 4. There are no Class 400 flanges in NPS ½ through NPS 3 (use Class 600), Class 900 flanges in NPS ½ through NPS 2 ½ (use Class 1500), or Class 2500 flanges NPS 14 and larger

  • 5. There are no NPS ½ through NPS 3 Class 400 flanges (use Class 600), NPS ½ through NPS 2 ½ Class 900 flanges (use Class 1500), or NPS 14 and larger Class 2500 flanges

HEAT EXCHANGER GASKETS

Metal jacketed heat exchanger gaskets can be supplied in circular or non-circular form, in standard or non-standard sizes. The gaskets are manufactured in different styles to API, ANSI, DIN and BS standards for all types of applications. The selection of gasket style and metal depends upon the operating conditions and the mechanical features of the flanged assembly.

We can also design custom metal jacketed gaskets based on customer specifications and our specialist knowledge ensures gaskets are fabricated to fit accurately and have an effective seal. Contact us to discuss custom requirements.

STANDARD HEAT EXCHANGER GASKET SAMPLES

DOUBLE JACKETED GASKETS

DOUBLE JACKETED W/ 

SOFT FILLER

SINGLE JACKETED W/

SOFT FILLER 

PARTLY ENCLOSED

SINGLE JACKETED W/ 

SOFT FILLER

TOTALLY ENCLOSED

Hoffman-Kane double-jacketed gaskets are particularly suited for applications like heat-exchangers and boilers. The gasket is constructed of a soft, heat resistant, non-asbestos filler material, which is completely enclosed in a two-piece metal jacket. When pass partition bars are required, we offer a welded pass bar construction. With a welded pass bar arrangement the fluid is retained by the primary seal at the inner diameter of the gasket. Thus the primary seal maintains its function, providing a seal of higher integrity.

Advantages

• the metal jacket covering the filler material prevents contamination

• ensures high elasticity and recovery

• nearly any dimension and shape can be made • the welded construction of the bars results in two independent seals: the primary seal at the inner diameter and the secondary seal at the outer diameter.

CAMPROFILE W/ FILLER

Recently included in ASME B16.20 (rev. 2012), the Hoffman-Kane Camprofile w/ filler gasket is comprised of a concentrically serrated solid metal core with a soft, conformable sealing material bonded to each face. The soft facing material provides low stress gasket seating, while the serrated geometry of the metal core enhances sealing performance by inducing stress concentrations on the sealing surfaces. The serrations minimize lateral movement of the facing material, while the metal core provides rigidity and blowout resistance. This gasket exhibits excellent compressibility and recovery characteristics, maintaining joint tightness under pressure and temperature fluctuations, temperature differential across the flange face, flange rotation, bolt stress relaxation, and creep. Suitable from vacuum to extremely high pressure applications.

 

METALLIC GASKETS

CORRUGATED SOLID METAL

The superior technology of the corrugated family of gaskets ensures excellent sealing performance and reliability, even in the most difficult applications. Each of the four styles combines a corrugated metal core with a compressible sealing element of various materials, for resistance to a wide range of harsh conditions, including extreme temperature, corrosive chemicals, and thermal cycling.

RING JOINT GASKETS

Hoffman-Kane Ring Joint gaskets are developed for use in the petroleum industry and in particular for wellhead and Christmas tree- as well as drilling and oil & gas production equipment. These solid precision machined metallic gaskets, also called and known as ring type joint (RTJ) gaskets are suitable for the highest possible pressure and temperature duties and form together with special grooved API 6A (ISO 10423) type 6BX flanges a high integrity seal. 

These gaskets are manufactured in a special symmetric shape of the cross-section. The width of the sealing faces is small and high seating stresses can be formed. Dimensions of gaskets and corresponding grooves are designed in such a way that the  gaskets do become self-sealing characteristics. This effect is also known as pressure energized sealing.

 

RUBBER

Advantages:

Excellent impact strength

Very good resilience

Tensile Strength

Abrasion resistance and flexibility at low temperatures

Limitations:

Poor resistance to ozone and sunlight

Very little resistance to oil, gasoline and hydrocarbon solvents

Applications:

Bulk and non-critical applications

Basic gaskets and washers 

Hose

Skirtboards, scrapers

Grade II industrial belting

Advantages:

Good inherent flame resistance

Moderate resistance to oil and gasoline

Excellent adhesion to fabrics and metals

Very good resistance to weather, ozone and natural aging

Good resistance to abrasion and flex cracking

Very good resistance to alkalis and acids

Limitations:

Poor to fair resistance to aromatic and oxygenated solvents

Limited ability at low temperatures

Applications:

Bulk and non-critical applications

Basic gaskets and washers 

Hose

Skirtboards, scrapers

Grade II industrial belting

STYRENE-BUTADIENE (SBR) (RED)

SPECIFICATION ASTM D2240

NEOPRENE

ASTM GRADE (D2000 : 1BC710)

Advantages:

Very good resistance to oil and gasoline

Superior resistance to petroleum-based hydraulic fluids

Wide range of service temperatures

Good resistance to hydrocarbon solvents

Very good resistance to alkalis and acids

Limitations:

Inferior resistance to ozone, sunlight and natural aging

Poor resistance to oxygenated solvents

Applications:

Where oil resistance is the main concern

Machinery gaskets, around oil and gas handling equipment

White food grade

Heat and oil resistant belting

Hose cover

Wire and cable

NITRILE (BUNA-N)

ASTM GRADE (D2000 : 1BE610)

Advantages:

Excellent resistance to heat, ozone and sunlight

Very good flexibility at low temperatures

Good resistance to alkalis, acids and oxygenated solvents

Superior resistance to water and steam

Excellent color stability

Limitations:

Poor resistance to oil, gasoline and hydrocarbon solvents

Poor adhesion to fabrics and metals

Applications:

Weatherstripping for doors and windows

Automotive weatherstripping

Gaskets and washers around electrical equipment

Conveyor belting

Hose for steam, garden, radiator

Caulking material

ETHYLENE-PROPYLENE (EPDM)

ASTM GRADE (D2000 : 3BA608A14C12F17)

FLUOROELATOMER (FKM)

ASTM GRADE

Advantages:

Excellent chemical resistance

Excellent sealing capability in aggressive environments

UV & Ozone resistant

Resistant to liquid permeation in severe conditions

Cinnamon scented for easy identification

Limitations:

Constant elevated temperature impacts ability to withstand high torque loads 

Hot tear strength is not optimum

Applications:

Aircraft, automotive, and other mechanical devices

Gas and chemical processing industries

Mining - hydraulic systems on diggers

Forestry - spring loaded cylinders on vehicles

Wind power - gear boxes

High vacuum

Advantages:

Outstanding impermeability to gases and vapour

Very good resistance to heat, oxygen, ozone and sunlight

High energy absorption (damping)

Excellent resistance to alkalis and oxygenated solvents

Good hot tear strength

Superior resistance to water and steam

Limitations:

High compression set

Poor resistance to oil, gasoline

Fair processability

Poor resilience

Applications:

Gaskets and seals

Tire inner tubes

Sport ball bladder

Hose

BUTYL (IIR)

ASTM GRADE (D2000 : 3BA610A14C12)

Advantages:

High tensile strength

Superior resistance to tear and abrasion

Excellent rebound elasticity (snap)

Good flexibility at low temperatures

Excellent adhesion to fabric and metal when properly prepared

Limitations:

Poor resistance to heat, ozone and sunlight

Very little resistance to oil, gasoline and hydrocarbon solvents

Applications:

Where abrasion resistance and rebound are critical

Cement sleeves, chute linings

Low temperature use

NATURAL RUBBER (GUM)

ASTM GRADE (D2000 : 2AA425A13F17)

 

TASK-LINE®

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TASK-LINE® GASKETS
  • TASK-LINE gaskets are molded to size, ½" through 24” in class 150# and 300# ANSI ratings with a thickness of ⅛" or 3/32” (other thicknesses available upon request). Installation is quick and simple. TASK-LINE gaskets are self-aligning and seat easily to any flange in almost any condition.

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TASK-LINE® GROUNDING PADDLES
  • TASK-LINE lined pipe grounding paddles are molded to size, 1" through 6" (other sizes available upon request) in class 150# ANSI ratings with a thickness of ⅛". The paddle handle extends 2" above the flange and is pre-drilled for grounding hardware and cable (included). TASK-LINE lined pipe grounding paddles self-align and seat easily to any 150# ANSI, lined pipe flange and never require gaskets.

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TASK-LINE® LINE BLOCKER
  • TASK-LINE pipeline fluid blockers (line blockers) are molded to size, 1" through 6" (other sizes available upon request) in class 150# ANSI dimensions with a nominal thickness of ⅛°" Installation and removal are a snap with its integral molded paddle handle. The handle extends 2" above the flange and has a pre-drilled 3/8" hole for tagging (while in service) or hanging (while in storage).