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GROUP II REINFORCED ELASTOMERS
Most of the elastomers in Group I can be reinforced to increase their ability to withstand working pressure and gasket seating stress. The reinforcement can be cellulose, synthetic, and glass fibers. They can be blended in with the elastomers or be in the form of woven cloth.
Compressed Gasket Sheet (below)
A low compressibility material containing a percentage of aramid fiber and other compounding ingredients bound together by an elastomer binder. The material produced under high pressure by calendering produces a non-porous sheet strongly resistant to plastic flow under high torque load; suitable for high temperature and working pressures: available in sheet thicknesses of 1/64" (.4mm) to 1/4" (6.4mm) and in sizes 60" (1524mm) x 180" (4572mm).
Binder/
Fiber |
Max.Temp.
/Pressure |
(Under 5,000
PSI Loaded) |
Tensile
(Across Grain) |
Application |
NITRILE
Synth. |
700°F
500 PSI |
7%-
17% |
2000 PSI |
For oils, greases, hydrocarbon solvents, some refrigerants, gases |
NEOPRENE
Synth. |
700°F
500 PSI |
7%-
17% |
2500 PSI |
For freon type refrigerants, high analines, oils, ammonia, water & gases |
SBR
Synth. |
700°F
500 PSI |
7%-
17% |
2800 PSI |
For steam, water & salt alcohols, weak acids & alkalines - also air and inert gases |
EPDM
Synth. |
700°F
500 PSI |
7%-
17% |
2500 PSI |
For weak acids, brake fluids brake fluids Resists weathering, oxygen & ozone - also for animal & vegetable oils. |
NITRILE
Synth.
Wire
Reinforced |
700°F
500 PSI |
7%-
17% |
2900 PSI |
Same as nitrile but for fluctuating low temperature |
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