| 摘要 |
PURPOSE:To improve durability, by providing a driven ring and a plate ring respectively with one of them in a rotary shaft and the other in a housing both through O rings and the driven ring coming into slide contact with the plate ring further gluing a polytetrafluoroethylene (PTFE) sheet to the peripheral surface of the O ring. CONSTITUTION:A driven ring 3, which rotates with a rotary shaft 1, is brought into slide contact with a plate ring 2, through which the rotary shaft 1 penetrates, in a fixed side, and fluid is prevented from its leakage from a sliding surface. Further sealing by O rings 5, 6 respectively between the plate ring 2 and a housing 4 and between the driven ring 3 and the rotary shaft 1, the leakage is prevented. While gluing a polytetrafluoroethylene (PTFE) sheet 13 to the O rings 5, 6, a rubber member 12 is prevented from coming into contact with the sealed fluid by the sheet 13, accordingly a device prevents the sealed fluid from its leakage by deteriorating the rubber member 12 while improves durability of the O rings 5, 6.
|
