| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil seal which improves the feeling in manual fitting into a cylindrical mounting portion without increasing a fitting force, and does not require a visual check after fitting. <P>SOLUTION: The oil seal 1 to be fitted on the outer peripheral side of the cylindrical mounting portion from one side in the axial direction comprises a metallic ring 2 and a rubber like elastic body 3. The rubber like elastic body 3 has: a rubber fitting portion 4 which is mounted to the inner peripheral surface of the metallic ring 2 and engages with the outer peripheral surface of the cylindrical mounting portion; and a seal lip 5 to be brought into close contact with a mating member. Projected engaging portions 6 to be engaged with groove shape engaging portions provided on the outer peripheral surface of the cylindrical mounting portion are provided on the inner peripheral surface of the rubber fitting portion 4. A PTFE coating film 10 is formed on the inner peripheral surface of the rubber fitting portion 4 including the projected engaging portions 6. <P>COPYRIGHT: (C)2008,JPO&INPIT |
