NPT (National Pipe Thread) is a U.S. standard for tapered threads used on threaded pipes and fittings. They are widely adopted in North American hydraulic and pneumatic systems. The taper on NPT threads allows them to form a seal when torqued, as the flanks of the threads compress against each other. The NPT Hydraulic Fittings Tower is a comprehensive solution for professionals, offering an extensive range of adapters and O-rings to ensure compatibility and efficient performance in various applications