Method of sealing and protecting a plastic lined pipe joint

Details Method of sealing and protecting a plastic lined pipe joint Method of sealing and protecting a plastic lined pipe joint

1983-08-19

1985-04-02

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29458, 29464, 29455R, 277 1, 277 11, 285 27, 285 55, 285371, B23P 1102

Patent

active

045078424

ABSTRACT:
A method for sealing and protecting a plastic lined pipe joint from corrosive fluid passing through the plastic lined pipe involving the placing of a plastic collar seal internally within the pipe joint at the time of assembly of the pipe joint. The plastic collar seal involves concentric O-rings at each end that annularly seal off the end of the pipe and pipe collar. An external ridge on the collar seal allows the collar seal to rest on the end of the pipe section during assembly and assists in assembling the joint. Such a collar seal has been found to be particulrly useful in oil and gas well applications for injecting corrosive fluids into the well.

REFERENCES:
patent: 2261566 (1941-11-01), Russell et al.
patent: 2938562 (1960-05-01), Watts et al.
patent: 3253841 (1966-05-01), Ahmad
patent: 3266821 (1966-08-01), Safford
patent: 3451119 (1969-06-01), Coberly et al.
patent: 3596931 (1971-08-01), Mishler
patent: 4043857 (1977-08-01), Byrne et al.

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