Materials Guide
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The following guide will help you pick the general class of materials suitable for your application. These materials are available in uncut form as well as in the form of gaskets.
In addition to these basic materials, we fabricate products from a wide variety of specialized materials (including ceramic, cork, fiberglass, vegetable fiber, etc.). We can use materials designed to handle ultra-high and ultra-low temperatures and extreme chemical environments. If you don't see the specific material you need just call - we can do it! We will supply any of our materials with pressure sensitive adhesive on one or both sides. |
Rubber is the most
cost-effective material to use where temperatures and
pressures are low and the chemical environment is mild.
Different elastomers offer different mechanical and chemical
properties. Cloth inserted materials are better able to
handle movement and high compression loads. |
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Sponge Neoprene,
Nitrile, Silicone and Viton® are also available in sponge |
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 Non-Asbestos Materials |
Non-Asbestos
gasket materials enhance the temperature and pressure
performance of rubber and vinyl by combining non-asbestos fibers
with the rubber. Metal inserted materials are able to operate at
even higher pressures.
Non-Asbestos materials replace natural asbestos fibers in
traditional gasket materials with various combinations of
fiberglass, aramid, inorganic and synthetic fibers.
Mercer carries Donex®, Durabla®, Garlock® and Thermoseal® (Klinger)
& Victor Reinz® brands of non-asbestos gasket materials. These materials are
available in thicknesses 1/64" through 1/4".
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| Carbon and Graphite Materials |
Carbon Fiber and
Graphite Flake sheets are able to withstand significantly more
aggressive chemical environments (other than powerful oxidizing
environments) and higher pressures than standard non-asbestos
gasket materials. Metal inserted materials are able to operate
at even higher pressures. In reducing environments, pure
graphite can handle up to 5000F.
Mercer carries Garlock, Thermoseal and Grafoil brands of carbon
and graphite based gasket materials. These materials are
available in thicknesses 1/32" through 1/4".
| Material | Max T (F) |
Max P (psi) |
Creep Rel'n (%) |
Applications/Features |
|---|---|---|---|---|
| Carbon or Graphite/Nitrile | 840 | 1900 | 20 | Excellent for steam. Excellent chemical resistance except powerful oxidizing agents. |
| Carbon or Graphite/SBR | 900 | 2000 | 14 | Excellent for steam. Excellent chemical resistance except powerful oxidizing agents. |
| Pure Flexible Graphite | 950 | 2100 | 5 | Excellent chemical resistance except powerful oxidizing agents. Available laminated or homogeneous. |
| Pure Flexible Graphite - Metal Inserted | 950 | 2800 | 7 | Excellent chemical resistance except powerful oxidizing agents. Available with 316 SS Foil, Mesh or Tang Core. Available laminated or homogeneous. |
Mercer fabricates solid or jacketed gaskets from any metal in any thickness. Below is a selection of the more popular metals and their performance characteristics.
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Teflon®-based gasket materials
are able to withstand significantly more aggressive chemical
environments (including highly oxidizing environments) than
standard non-asbestos gasket materials. However their
temperature, pressure and mechanical performance is inferior
to standard non-asbestos gasket materials. Metal inserted
and expanded PTFE are able to operate at higher pressures.
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Mercer Gasket & Shim
Interstate Industrial Park & 110 Benigno Boulevard
Bellmawr, NJ 08031
ISO 9001:2000 certified
On call 24 hours!
(800) 210-5000
Fax: (856) 931-6400
