Answer
Jan 27, 2025 - 11:23 AM
Mixing NPT (National Pipe Taper) and NPTF (National Pipe Taper Fuel) threads is generally not recommended. While both have the same taper and pitch, NPTF threads are designed to create a dry seal without sealant due to their tighter tolerances and truncated thread crest, whereas NPT threads typically require a sealant to prevent leaks. For optimal performance and safety, it is best to match the thread types within a system.
