Clay tile pipe joint seal containing foamed unsaturated polyeste

Details Clay tile pipe joint seal containing foamed unsaturated polyeste Clay tile pipe joint seal containing foamed unsaturated polyeste

1974-10-21

1976-05-04

Wong, Jr., Harry

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

260 25N, 277207R, 285291, 277DIG6, 264 466, C08G 6302, C08J 910

Patent

active

039542742

ABSTRACT:
An improved joint seal for a clay tile pipe having bell and spigot configurations is provided with unsaturated polyester resin in a foamed, low density state, preferably below about 50 pounds per cubic foot.

REFERENCES:
patent: 2219289 (1940-10-01), Bennett
patent: 2498621 (1950-02-01), Kropa et al.
patent: 2889582 (1959-06-01), Cooper
patent: 3135519 (1964-06-01), Ligon et al.
patent: 3251603 (1966-05-01), Cobbledick et al.

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