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Reinforced Rubber Sheet (below)
Rubber sheet can be reinforced with single or multi-plies of various types of fabrics, which strengthens the sheet just as fabric strengthens a rubber tire. Reinforced sheet is primarily used for heavy hydraulic service, or in diaphragm applications where it is important that creep, rupture or blow-out is minimized by rubber reinforcement.
| Binder |
Reinforcement/ Description |
Max.
Temp |
Application |
| SBR |
Cotton Cloth Cloth
inserted or CL sheet |
180°F |
Suited for general service against low pressure cold water. |
| NEOPRENE |
Cotton Cloth Diaphragm Sheet |
250°F |
For broad application in oil and gasoline service in fuel pumps, control valves and similar uses. |
| NEOPRENE |
Nylon Cloth Diaphragm Sheet |
250°F |
Recommended for diaphragm service in high pressure systems |
Cork & Rubber Compositions
These materials are made by using cork granules as a filler in a synthetic rubber polymer. Each cork granule is completely surrounded by a layer of the synthetic rubber. Cork-rubber compounds combine the characteristics of the two materials to make very efficient gasket materials. Numerous grades are offered which vary in hardness, cork-to-rubber ratio, and base polymer.
The resistance to chemical attack of cork and rubber materials depends upon the base polymer,and is about the same as if there were no cork present.
Cork and rubber compositions are generally limited to internal pressure, up to 50 psi and for continuous service where temperatures range from - 20°F to 250°F (-29°C to 120°C). Basically cork and rubber should be confined to light-to-medium duty gasket applications, and not be used to seal inorganic acids or alkalies.
Woven and Folded Cloth
Consists of woven cloth using fiberglass yarn,and impregnated with either natural rubber or SBR compounds to limit porosity. This type of material was developed to handle applications where pitted, warped or rough face flanges require a pliable material to seal the unit adequately.
Woven cloths are usually furnished 40" wide in thicknesses of 1/16". Greater thicknesses require a plied or folded construction. Temperature is generally limited to about 500-600°F (260-315°C) and pressures to a maximum of about 450
psi.
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