high pressure pipe fittings are designed for liquid and gas applications

FD-LOK high pressure pipe fittings are designed for liquid and gas applications. The Series Fittings are high pressure NPT fittings for high pressures.
NPT threads must be sealed using a high quality PTFE tape and/or paste product. Sealing performance may vary based on many factors such as pressure, temperature, media, thread quality, thread material, proper thread engagement and proper use of thread sealant. NPT pipe fittings is assembled and disassembled because thread deformation during assembly will result in deteriorating seal quality over time. When using only PTFE tape, using thread lubrication to prevent galling of mating parts is recommended.