Collar leak clamp for steel.
Dresser Style 4 and Style 41 collar clamps quickly and inexpensively stop leaks through the threads of screw collars (threaded couplings), solvent weld couplings (collars) and stab-type PVC joints. Repairs are permanent and normally made without interrupting service or dismantling the line. Style 4 clamps consists of two malleable split follower rings with interlocking ends on each section, two resilient split Dresser gaskets, and bolts as required for pipe sizes up to 4 inch. Style 41 consists of the same parts except the split follower rings are steel and are connected by steel lock links.