QC Hydraulics’ Male NPT Rigid Hose Fittings for PTFE hoses are hydraulic fittings with external National Pipe Taper (NPT) threads, designed to connect PTFE (Teflon) hoses to female NPT fittings in a fixed, non-swiveling configuration. Usually stainless steel, they form a leak-resistant seal with tapered threads, often needing PTFE tape or sealant. These fittings suit high-pressure, corrosion-resistant uses like hydraulics or chemical systems with PTFE hoses.