Making sealing ring assembly

Details Making sealing ring assembly Making sealing ring assembly

1986-12-04

1990-04-10

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

264152, 264250, 264274, 264275, B29C 4514

Patent

active

049158929

ABSTRACT:
A sealing ring assembly suitable for a gland or piston seal is provided wherein a preformed resilient insert, preferably an elastomeric ring, is positioned in a ring mould, for example, by having a channel fitted over an annular projection of the mould, so as to partly define the moulding cavity of the mould. A sealing ring portion to be energized by the insert is then moulded onto the insert in the moulding cavity so that, in the assembly, the insert is mechanically retained and a perfect fit in a channel of the sealing ring portion, thereby avoiding the need to have the two parts bonded together. The insert and sealing ring portion may be slit e.g. to facilitate fitting of the assembly.

REFERENCES:
patent: 3578812 (1971-05-01), Taussig et al.
patent: 3851888 (1974-12-01), Limpson, Jr. et al.
patent: 4269802 (1981-05-01), Linne

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