That Teflon tape trick my neighbor swore by flooded my bathroom floor

I tried wrapping Teflon tape around a faucet cartridge like my neighbor said, but I went overboard and used 12 wraps on a single stem. The tape bunched up inside the valve body and stopped the water flow completely at first. Then when I turned the pressure back on, it shot a stream of water right past the o-ring and soaked my vanity. Took me 20 minutes to pick all the little white shreds out of the valve with tweezers. Learned the hard way that Teflon tape is only for pipe threads, not for sealing flat surfaces. Has anyone else had tape fragments clog up their faucet internals like that?

2 comments

2 Comments

charliew999d agoOG Member

Dang, 12 wraps?! That's insane. I'd be pulling little white plastic shards out of a faucet with tweezers too, that sounds like a total nightmare. My uncle did something similar trying to fix a leaky shower head and ended up with a stream of water hitting the ceiling instead of the tub. Tape shreds getting all jammed up in the valve body is probably the worst plumbing fix I've ever heard of besides someone using a potato to plug a pipe. Hope your vanity dried out okay, that's a rough lesson for sure.

angela_kelly8d ago

PTFE tape is actually designed to act as a lubricant on threads, not a sealant... that's the part most people miss. The actual water seal comes from the tapered pipe threads tightening against each other, not from the tape itself. So 12 wraps probably just made it impossible for the threads to seat properly, which is why everything went sideways.