Couplings and joints of metal for pipes.

Caulking materials; sealing gaskets of metal; sealing gaskets (non-metallic -) [other than for ships]; pipe gaskets; joint packings for pipes; rings of rubber for use as pipe connection seals; seals for pipe connections; seals of metal for pipes; sealing rings; watertight rings for plumbing pipes; gaskets of metal; flexible plastic pipes for conveying natural gas; flexible plastic pipes for plumbing purposes; pipe couplings of rubber.

Joints of metal for pipes and tubes