What type of joint seal is better, the pipe thread tape or the pipe thread sealant?

Update:18-09-2020
Summary:

Pipe thread sealant is better. It acts as a lubricant w […]

Pipe thread sealant is better. It acts as a lubricant when tightening the threaded connection as well as hardening into a permanent sealant.PTFE Seal Tapes 25mm Red Spool

 

 

Pipe thread tape, commonly known as ‘teflon tape’, though excellent, only acts as a lubricant. Using tape, the seal is actually achieved only within the threads, which are tapered, becoming a closer fit as they are tightened.

Teflon tape also eases the job when taking threaded joints apart. Millwrights and other maintenance professionals often use it in lieu of an anti-sieze compound on bolts and other threaded fasteners to facilitate later disassembly.