Polyurethane foam body with alkaline substance suspended therein

Details Polyurethane foam body with alkaline substance suspended therein Polyurethane foam body with alkaline substance suspended therein

1977-04-25

1979-05-08

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

277DIG2, F16J 1510

Patent

active

041532619

ABSTRACT:
A polyurethane foam body which has an alkaline substance suspended therein is provided with a slanted slit so that when the steel bell ring of a pipe telescopingly receives the steel spigot ring of another pipe the polyurethane foam body is compressed such that the resilient forces thereof do not cause the pipes to separate when united to form a joint.

REFERENCES:
patent: 2209235 (1940-07-01), Nathan
patent: 3129964 (1965-04-01), McNeil
patent: 3520541 (1970-07-01), Rohani
patent: 3567233 (1971-03-01), Stepanich
patent: 3923311 (1975-12-01), Tashlick

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