Pipe joint seal rings

Details Pipe joint seal rings Pipe joint seal rings

1986-10-21

1987-12-08

Callaghan, Thomas F.

Pipe joints or couplings

Particular interface

Tapered

285333, 285355, 285910, 277165, 277227, F16L 1500

Patent

active

047114746

ABSTRACT:
An improved seal ring comprising a polymeric material ring in combination with a softer polymeric material ring. The seal ring can be used in either male or female fittings and is adapted to seal by mating engagement of the polymeric material with one set of threads and a recess in the other set of threads.

REFERENCES:
patent: 2087185 (1937-07-01), Dillon
patent: 2150221 (1939-03-01), Hinderliter
patent: 2980451 (1961-04-01), Taylor et al.
patent: 3322446 (1967-05-01), Koziol et al.
patent: 3526407 (1970-09-01), Chattin et al.
patent: 3636824 (1972-01-01), Clark
patent: 3774920 (1973-11-01), Sievenpiper
patent: 3811710 (1974-05-01), Dula et al.
patent: 4190259 (1980-02-01), Zitting
patent: 4576386 (1986-03-01), Benson et al.

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