Abstract: A pipe coupling and gasket is provided in which electrical conductivity through the coupling is assured, said coupling consisting of a middle ring with conical ends receiving an annular resilient gasket having a conductive helix made from metal wire of triangular cross section with an apex on the periphery of the helix, end caps urging the gasket into the conical ends of the middle ring and compression means acting on the end rings to move them toward the middle ring to compress the gasket and engage the helix against the middle ring, the end caps and a pipe therein.

Abstract: A pipe coupling is provided having a sleeve with frusto-conical ends, elastomer gaskets fitting in said frusto-conical ends, a follower at each end of the sleeve having a frusto-conical opening, a plurality of generally triangular jaws fitting in said opening, a split, generally cylindrical, ring between the jaws and pipe end engaging both and tightening means acting on each follower.

Abstract: A pipe coupling is provided having a sleeve with frusto conical ends, elastomer gaskets fitting in said frusto conical ends, a follower at each end of the sleeve having a frusto conical opening, a plurality of generally triangular jaws fitting in said opening and tightening means acting on each follower.