Improvements in and relating to sealing or packing rings and the moulding of such rings and other articles

摘要

975,410. Piston packing; oil seals. GEORGE ANGUS & CO. Ltd. March 15, 1961, No. 9446/61. Headings F2B and F2T. [Also in Division B5] An oil seal or piston packing having a metal reinforcing ring 4 is moulded from rubber and during moulding is formed with beads 5 which ensure that it adheres to the male die part when the mould is opened. A groove 3 is provided for a garter spring.