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Description / Abstract:
The material defined by the A1 specification consists of
cellulose fibers bonded with nitrile butadiene rubber and totally
encapsulated with chloroprene rubber.
The material defined by the A2 specification consists of
cellulose fiber and mineral fillers bonded with nitrile butadiene
rubber and encapsulated with a layer of styrene butadiene rubber
and nitrile butadiene rubber.
The encapsulation is added to both base materials to aid in
sealing flange microfinish and to prevent migration of automatic
transmission fluid through the gasket.