... 9,SH3408, SH3409,HG/T21635,DL/T695,SY/T0510, DIN2617Pipe cap: A type of pipe fitting, usually liquid or gas ... and the other end closed off. If a solvent weld cap is used to provide for a future connection point, ... glued onto it. In plumbing systems that use threads, the cap has female threads. Industrial caps can be round, square, rectangular ... I-shaped and have a round hand grip or a flat hand grip