| 摘要 |
<p>In a suspension strut a piston-rod (15) works through an elastomeric seal (17) at the inner end of a tubular extension (9) which depends from an end plug (6) closing the upper end of cylinder (1). The seal (17) comprises a collar (20) which encircles the free end of the extension (9) and is provided with a depending, contiguous, radial sealing flange (24) which overlies the free end of the extension (9). The flange (24) may be encircled by a retaining ring (31) which enhances the grip of the flange (24) against the rod (15), and the collar (20) may be stiffened by a metal tubular former (21) embedded in the material of the collar (20).</p> |
