| 摘要 |
1528218 Moulding shaft seals GARLOCK Inc 21 April 1976 [12 May 1975] 16199/76 Heading B5A A method of forming a shaft seal 12 having a non-elastomeric sealing lip 18 comprises placing a blank 28 for the lip in a mould cavity 32 and compression or transfer moulding the seal body 16 from an elastomeric preform in a transfer cavity 30, the blank 28 being formed into the lip 18 by closure of the mould parts 22, 20. The lip 18 may be formed of PTFE and the seal body 16 may be of synthetic rubber. A metal shell 12 may be provided for the seal. The blank 28 may have a washer, disc or conical form. |
