OIL SEAL FOR AUTOMOBILE

摘要

An oil seal for automobiles including an elastic component having a seal lip portion. The elastic component consists of a composition containing fluororubber and fluororesin. The seal lip portion has protrusions at least on the surface thereof. The protrusions substantially consist of the fluororesin contained in the composition. The fluororesin is a copolymer containing a polymerized unit based on tetrafluoroethylene and a polymerized unit based on hexafluoropropylene.

主权项

1. An oil seal for automobiles, comprising
an elastic component including a seal lip portion, the elastic component comprising a composition that contains fluororubber and fluororesin, and having protrusions at least on a surface of the seal lip portion, the protrusions substantially consisting of the fluororesin contained in the composition, and the fluororesin being a copolymer comprising a polymerized unit based on tetrafluoroethylene and a polymerized unit based on hexafluoropropylene.