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Grafoil® Gaskets

GRAFOIL® flexible graphite was the first fluid sealing material made exclusively from pure, natural graphite flake.  Its resistance to heat, fire, corrosion and aggressive chemicals make it the most universally applicable sealing solution on the market today.  Like no other , GRAFOIL products provide a tight seal after repeated exposure to the harshest environments.

Grafoil is a product of Graftech Inc.

Grafoil gasketing material

GTB:

Grafoil® homogeneous Standard Industrial Grade flexible graphite sheet with an oxidation/corrosion inhibitor and typically 98% carbon content. Its leachable Chloride content is less than 50 ppm. It is an ideal facing material for flat gaskets It contains no binders or resins. No binders or resins. Non-fibrous. Non-asbestos. Sulphur content <500 ppm. Compressibility: 43%. Recovery: 15%. Creep relaxation: <5%. Tensile strength: 650 PSI. Grafoil Specifications Temperature range (oxidizing atmosphere): -400°F to 850°F. (Properties based on 1/16” thickness.)

GHL

Grafoil® flexible graphite laminate made from material typically 98.0% graphite. Leachable chloride typically less than 50 PPM. No binders or resins. Adhesive bond. Sulphur content < 500 ppm. Compressibility: 40%. Recovery: 20%. Creep relaxation: <5%. Sealability: <0.12 fluid ounces/hr. Tensile strength: 650 PSI. Grafoil Specifications Temperature range (oxidizing atmosphere): -400°F to 850°F.

GHP

GrafoiI ® fIexible graphite laminate with polyester insert (0.0005” thick) made from material typically 97.0% graphite. Leachable chlorides typically less than 50 ppm. No binders or resins. Thermal bond. Non-fibrous and non-asbestos. Sulphur content <500 ppm. Compressibility: 40%. Recovery: 20%. Creep relaxation: < 5%. Sealability: <0.012 fluid ounces/hr. Tensile strength: 650 PSI. Grafoil Specifications Temperature range (oxidizing atmosphere): -400° F to 850° F.

GHR

Grafoil® flexible graphite laminate with flat 316/31 6L stainless steel insert (0.002” thick) made from material typically 98.0% graphite. Leachable chlorides typically less than 50 ppm. No binders or resins. Adhesive bond. Non-fibrous and non-asbestos. Sulphur content <, 500 ppm. Compressibility: 40%. Recovery: -.20%. strength: 3800 PSI. Grafoil Specifications Temperature range (oxidizing atmosphere): -400°F to 850°F.

GHE:

Grafoil® flexible graphite laminate with tang 316/316L stainless steel insert (0.004” thick) made from material typically 98.0% graphite. Leachable chloride typically less than 50 PPM. No binders or resins. Mechanical bond. Non-fibrous. Non-asbestos. Sulphur content <500 ppm. Compressibility: 30%. Recovery: 30%. Creep relaxation: <5%. Tensile strength: 3800 PSI. Grafoil Specifications Temperature range (oxidizing atmosphere): -400°F to 850°F. (Properties based on 1/16” thickness.)

Call us directly or order Grafoil® gasket material online today!
American Seal & Packing (714) 593-9780

When it comes to cutting gaskets there are several ways to get the job done. Traditional "clicker presses" are great for larger quantity jobs and have been the standard in the industry for years. The biggest down side to using clicker presses is tooling must be made to produce a gasket. Just as CNC lathes revolutionized the machining industry, laser cutters, routers and water jet are all computer controled ways of cutting a gasket with out the need for tooling or dies.

Laser Gasket Cutting

 

Specialized sealing products like Grafoil® flexible graphite, FKM, Ameri-lon®, Kalrez®, Chemrez®, and more common materials for cut gaskets like: PTFE, filled PTFE, FKM, Viton®, silicone, rubber, buna, EPDM, cork, fish paper, vegetable fiber, and non-asbestos Cut Gaskets.

If you have a cut gasket application that requires more than traditional solutions, let our team of cut gasket professionals help.

Manufacturers we represent

Flow Serve, Borg Warner, Durametallic, AST, Utex Industries, JM Clipper, Sepco, Donex, DX Seal, Flex-a-Seal, Pure Flex,  Parker, Leader Gasket, Burgmann.

Though trading partners we can also offer Flexitallic, Garlock, A.W. Chesterton, Anchor, and other major brands.

Cut Gaskets 

Fills the space between two objects, generally to prevent leakage between the two objects while under compression. Cut Gaskets saves money by allowing less precise mating surfaces on machine parts which can use Cut Gaskets to fill irregularities. Gaskets are commonly produced by cutting from sheet Cut Gaskets, such as gasket paper (beater addition), Non-asbestos, Rubber, EPDM, Nitrile, Buna, Neoprene, Flexible Graphite, Grafoil®, Aflas, Kalrez®, Viton®, Silicone, Metal, Mica, Felt or a plastic polymer such as (PTFE), Peek, Urethane, or Ethylene Propylene (EP).  In the past, the Cut Gaskets selected for specific applications may contain have contained asbestos.

Today's sealing products manufacturer's in the United States no longer produce or offer any asbestos containing products. Cut Gasketss containing asbestos have been claimed to have caused Asbestosis. Of course it would take the grinding of Cut Gaskets to release the fibers and then the breathing in of those fibers....possible but in the real world this would be rare. Wetting or oiling a gasket before grinding for removal greatly reduces any risk (not grinding is even better).  Asbestos Cut Gaskets is still used in most of the rest of the world and is a very effective low cost material.

It is usually desirable that the gaskets be made from a material that is compressible such that it tightly fills the space it is designed for, including any slight irregularities. The most common misconception when selecting a Cut Gasketss thickness is to choose a Cut Gaskets that is too thick. The thicker the material the more likely the material being contained can weep through the pores of the Cut Gaskets itself. This is a greater issue with some materials than others.  A rule of thumb is to have the material thick enough to compensate for any surface face irregularities and to permit some compression.  The required compression for your Cut Gaskets will depend many factors including:

1)Surface area

2)Pressure being sealed

3)Size of bolts (assuming bolts are being used)

4)Number of bolts

5)Condition of the bolts

6)Lubrication on the bolts

All must be considered when determining torque.  Torque data must be determined using all of the above and should be provided by an engineer.  In most cases unless your gasket is a standard ANSI or API flange using Ring or Full Face gaskets torque data will be difficult to come by (due to staffing and the fear of law suits).  In most cases the old tighten it tight enough to stop any leaks but not too tight as to completely crush the gasket is generally accepted.

Over compression of Cut Gaskets is a common problem with metal gaskets which have mechanically designed recovery built into the gasket.  Over compression removes the Cut Gaskets ability to recover. This is also true of expanded PTFE, once over compressed it will have no recovery and therefore will not longer adapt to maintain a seal.  The common strategy of "The more compressive load exerted on the gasket, the longer it will last" is generally true of elastomeric materials since elastomers (rubbers) are not compressible but deflect compression.  Many materials such as non-asbestos compressed Cut Gasketss and beater addition (ie; Armstrong) materials contain elastomers in the mix of material they are produced from, making them difficult to over compress.

One of the more desirable properties of an effective Cut Gaskets in industrial applications is the ability to withstand high compressive loads. Most industrial gasket applications involve bolts exerting compression well into the 14 MPa (2000 psi) range or higher. This is why Non-asbestos Cut Gaskets are so widely used in industrial Cut Gaskets applications.

American Seal & Packing Cuts Gaskets of all types, Including: PTFE, compressed non-asbestos, vegetable fiber, beater add, cork, and various rubbers - Nitrile, Buna-N, SBR, EPDM, Viton®, FKM, Hypalon, Aflas®, natural rubber, closed cell, open cell, Neoprene, GRAFOIL® Flexible Graphite and other "soft goods". Gaskets can be cut based on your drawing or sample of the gasket you desire. Basic I.D x O.D shapes can be cut by hand however most gaskets require a die. Gasket materials are available in rolls or on pallets depending on type and quantity. Name brands we can provide include; Brand G®, Donex, DX Seal, Mainland Sealing, Klinger, Johns Manville, RM, Detroit, Utex and GRAFOIL® Flexible Graphite among other gasket styles. So, if you want a cut gasket or gasket material so you can cut your own, we can help.

Call us directly or order Grafoil® gasket materials online today!
American Seal & Packing (714) 593-9780

 

 

 





 

 

 

 

 

Expanded PTFE
Joint Sealant
Strong, Resiliant, Reliable
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© 2013 American Seal & Packing, Inc.
GRAFOIL® is a registered trademark of GrafTech International Holdings Inc.

American Seal & Packing, Inc., Santa Ana, CA. 92705   714-593-9780

A California based, U.S. Supplier of Grafoil® Gaskets, Flexible Graphite, FKM Gaskets, Fish Paper Gaskets, Ameri-lon Gaskets, Armstrong Gaskets, Buna Gaskets, EPDM Gaskets, EPTFE Gaskets, Cork Gaskets, Mica Gaskets, Neoprene Gaskets, Nitrile Gaskets, Non-Asbestos Gaskets, PTFE Gaskets, Rubber Gaskets, Silicone Gaskets, Urethane Gaskets, Viton® Gaskets, Grafoil® Gaskets.

Aflas Gaskets Flexible Graphite Gaskets Grafoil Gaskets Cut Gaskets