| 摘要 |
Provided is a vehicle valve stem seal which exerts excellent sealing properties, and exhibits durability at an extremely high level and low sliding properties. Specifically, disclosed is a vehicle valve stem seal provided with an elastic member, which is disposed on the edge of a valve stem guide and which has a seal lip section that is slidably and closely attached to the valve stem of an engine, wherein: the elastic member is formed from a composition containing a fluororubber and a fluororesin; at least the surface of the abovementioned seal lip section is formed with a convex; the convex is essentially formed from the fluororesin contained in the aforementioned composition; the fluororesin is a copolymer containing a polymerization unit derived from ethylene and a polymerization unit derived from tetrafluoroethylene; and the fluororubber is a polymer containing a polymerization unit derived from vinylidene fluoride. |
