Replacing a pressure gauge - Tape or Paste?


Bronze Supporter
Apr 4, 2016
South East USA
I have to replace a couple pressure gauges. A reliable source said only to use paste, never tape on gauges.

Paste means yet another trip to Lowes, so I came here for second opinion.

Many thanks,



TFP Expert
Feb 3, 2014
Central Minnesota
I use tape. Works fine. As long as it doesn't leak, you're fine. Perhaps there's more risk of small pieces of tape getting into the gauge if you wrap the threads too low... so just don't wrap the tape beyond the bottom of the open end of the fitting.

Also... an good post from a while back: Teflon Tape and You

Pool Tool

Well-known member
May 15, 2014
Western Chicago Area, IL
Never wrap the bottom two threads of any fitting with tape. They are tapered and really dont do much other than get the fitting started. This will keep any tape out of the gauge and tape the right direction, counter clockwise if I'm looking at my backwards hand correctly ;)