1976-02-01

Silicone Rubber Oil Seals for Diesel Engines 760352

ABSTRACT

Standard laboratory immersion tests show silicone rubber to be stable in ASTM #1, #3 oils and in unused engine lube oils. However, new test data have shown that silicone rubber will degrade when exposed to engine lube oil which has functioned in lubricating a diesel engine for many hours of service. Special silicone rubber compounds have greatly improved the resistance to degradation as shown by laboratory tests and diesel engine tests of cylinder liner seals. These silicone rubber materials should also better the seal performance in other engine applications requiring low temperature flex, high temperature and petroleum base oil resistance.

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