| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal chain, in which a contacting pressure between a first lip 13a of a sealing member 13 and a plate is secured properly, unevenness of the contacting pressure is suppressed even if the seal chain is set over aslant and a seal crushing amount becomes uneven, and further a stress concentration in the connection parts of the lips 13a, 13b, 13c, 13d is relaxed in the state where the sealing member 13 is crushed. SOLUTION: The first lip 13a and second lip 13b extending in the radial direction from the center base part 13e, have widths C and A in the middle part in radial direction, which are greater than the width B of the third lip 13c and fourth lip 13d in the natural state, and the base end in the radial direction has a neck part 13f having a width narrower than in the middle part in radial direction. The neck part 13f has a concave curved surface 13h. COPYRIGHT: (C)2011,JPO&INPIT |
