| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sealing device capable of changing tightening allowance according to use conditions when the use conditions of mud water are different by moving two members relatively for each other and improving the endurance service life. <P>SOLUTION: This sealing device 1 is provided with a first sealing part 5 mounted in an annular space formed by two members 2, 3 assembled concentrically so as to move relatively, freely, and mutually in the axial direction, extending onto a sealing fluid side, and coming into slide-contact with an inward member 2 and a second sealing part molded integrally with the first sealing part 5, extending onto an anti-sealing fluid side, and coming into slide-contact with the inward member 2. Outside diameter of the inward member 2 is a tapered shape whose diameter is gradually reduced toward one direction, and tightening allowance of the sealing parts 5, 6 coming into slide-contact with the inward member 2 is changed when two members 2, 3 move relatively and mutually in the axial direction. <P>COPYRIGHT: (C)2007,JPO&INPIT |
