Thread Type Guide: NPT, BSP, JIS, SAE, Metric – Trimantec

PTFE Tape on BSPP Threads: Why It’s a No-Go 🚫 When working with BSPP (British Standard Parallel Pipe) threads, it’s essential to avoid using PTFE tape as a sealant. Here’s why: - BSPP threads often rely on a sealing mechanism elsewhere in the fitting, such as a 60° cone seat with a hydraulic hose insert seal. - PTFE tape can fill the thread gaps, causing the threads to bottom out prematurely, which can lead to: - Insufficient tightening torque - Reduced seal integrity - Potential for leaks or j