Can't imagine you'd want anything that "hardens". The white teflon stuff is good. As is the older regular grey stuff. When using tape, three wraps should do it. Something's wrong if it doesn't. You'll ...
Covers six common mistakes DIYers make when using Teflon (PTFE) tape for plumbing, with practical tips to avoid leaks and ...
Thread tapes are used to seal, lubricate, and prevent seizure on threaded bolts, studs, and fittings. They are commonly referred to as: Teflon tape PTFE tape PTFE thread seal tape plumber’s tape ...