NPTF stands for National Pipe Taper Fuel, which is a type of tapered pipe thread used for creating pressure-tight seals in piping systems. Unlike NPT (National Pipe Taper) threads, NPTF threads are designed to create a dry seal without the need for additional sealing compounds or tape. See full answer »

Yes, there is a difference between NPT (National Pipe Taper) and NPTF (National Pipe Taper Fuel). NPT threads are designed primarily for sealing with the use of a sealing compound, while NPTF threads have a more precise thread form and are designed to create a dry seal without the need for a sealant, making them suitable for fuel and high-pressure applications. See full answer »