Before revision: With straight pipe threads, the seal may be provided by an O-ring seated between the shoulder of the male pipe section and an interior surface on the female See also AN thread British Standard Pipe thread (BSP) Buttress thread Fire hose thread Garden hose thread National pipe thread (NPT) Nipple (plumbing) O-Ring Boss Seal Panzergewinde (steel conduit thread) Piping Plumbing RIDGID, manufacturer of pipe threaders Tap and die United States Standard thread External links NPT Vs. NPTF Taper Pipe Threads Newman Tools Inc. and J.W.
After revision: With straight pipe threads, the seal may be provided by an O-ring seated between the shoulder of the male pipe section and an interior surface on the female See also AN thread British Standard Pipe thread (BSP) Buttress thread Fire hose thread Garden hose thread National pipe thread (NPT) Nipple (plumbing) O-ring boss seal Panzergewinde (steel conduit thread) Piping Plumbing RIDGID, manufacturer of pipe threaders Tap and die United States Standard thread External links NPT Vs. NPTF Taper Pipe Threads Newman Tools Inc. and J.W.