| 摘要 |
PROBLEM TO BE SOLVED: To provide a sealing device with an excellent sealing property in a simple structure. SOLUTION: The first seal member 30 is formed intagrally with a metal ring 20, it has a diameter direction part 32 provided almost parallel to an inward flange 22, and a lip part 33, it is formed of a rubber form elastic member, and a pump screw 34 is provided to the sliding surface of the lip part 33 to the shaft. The second seal member 40 has a held part 41, and a lip part 42, it is formed of a resin member (such as PTFE), the root of the lip part 33 of the first seal member 30 is supported by the tip of the lip part 42, and the excessive deformation of the lip part 33 is prevented, and the sealing property by the lip part 33 is maintained. And a pump screw 43 is provided also to the sliding surface of the lip part 42 to the shaft. |
