Gasket for bell-type pipe joint

摘要: A gasket preferably of rubber or other suitable elastomer for providing a seal and mechanical joint between the components telescoping-type such as customarily referred to belland-spigot-type bell-type pipe joint. It is similar in some respects purpose disclosed U.S. Pat. No. 3,081,102, issued Mar. 12, 1963, Gasket Telescoping Joint, but has its exterior surface divided into two axially spaced sealing surfaces adapted engage interior bell, with slightly lesser diameter them partly relieve friction bell make easier insert bell. also includes bead on which extend fartherest use so positioned that when being pushed it will tend rotate direction pressure thereof against thus facilitate insertion inhibit rotation opposite original position thereby strengthen certain seals. The reduction outer part facilitates relief during insertion. locking closest open end this joined portion smaller by tapered substantially conical both makes start mouth possible lock grooves various different shapes made manufacturers without appreciable distortion.