| 摘要 |
A rubber bellows type seal (23) for reciprocating motion having an improved stroke to length ratio is obtained by fully separating the annular rubber convolutions (30) by axial deflection spaces (31,32) to allow the convolutions to be freely deflected in both directions This double deflection gives the bellows an increased stroke and thus an increased stroke to length ratio. Inner and outer tubular elements (25, 28) are bonded to the convolutions to support them in spaced apart working relationship.
|
