Bell-joint clamp for AC.
Dresser Bell Joint Clamps permanently stop or prevent leaks through the
jointing materials of cast iron bell-and-spigot joints. Completely
adjustable to provide a close fit on both the pipe bell and spigot, one
standard clamp fits virtually all the various makes of pipe within a
nominal size. Style 60 and 160 clamps can be quickly installed with no
interruption of service. A large, special rubber compound gasket shuts
off the leak when compressed as the spigot ring is drawn up and, in
turn, by bolts connected to the bell ring (anchored on the bell).