(19)

(11)

EP 0 293 431 A1

(12)

(43) Date of publication: 07.12.1988 Bulletin 1988/49 (21) Application number: 88900003.0 (22) Date of filing: 01.12.1987

(51) International Patent Classification (IPC):  F16J 15/ 34( . ) (86) International application number: PCT/AU1987/000408 (87) International publication number: WO 1988/004379 (16.06.1988 Gazette 1988/13)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 03.12.1986 AU 19860009309 04.09.1987 AU 19870004164 (71) Applicant: SEALING DEVICES PTY. LTD. Brookvale, NSW 2100 (AU)	(72) Inventor: DIXON, Rowland, Thomas Harbord, NSW 2096 (AU) (74) Representative: Popp, Eugen, Dr., et al  MEISSNER, BOLTE & PARTNER Widenmayerstrasse 48 D-80538 München D-80538 München (DE)