China Customized Green PU Seal for Pneumatic Sealing

we have clients -Cummins,Emerson,Neway,Linde,etc,and our products are applied in automobile,chemical,electrical industry and electronics,hydraulics and pneumatics,machine builders,petrol and allied industry,power industry, nuclear, off shore, solar, oil and gas ,etc
Pneumatic seals are any of a class of seals used in applications including rotary or reciprocating motions. They are often used in pneumatic cylinders and valves. Pneumatic seals do not work well under high pressure. Therefore, they are generally used in areas of lower pressure.
A pneumatic seal's sealing orientation can be internal as with a rod seal, external as with a piston, symmetrical, or axial. With internal pneumatic seals, a housing bore surrounds the seal and the sealing lip touches the shaft.
Rotary applications need only one pneumatic seal. This seal is considered to be single acting because it can seal in one axial direction while the application is moving. On the other hand, a reciprocating application requires two pneumatic seals, or double acting seals. In this case, one seal is needed for each of the directions. Double acting pneumatic seals are more complicated than single acting ones.

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