Should All Propane Connectors Have Rubber O-Rings To Prevent Leaks

Published 12/15/2023

Products Featured in This Question

MB Sturgis Propane Tank Adapter - POL x 1/4" Male NPT

(80)

$7.80

Thread Sealant Tape for Gas Lines

(88)

$13.83

Gas Pipe Sealant

(23)

$19.28

MB Sturgis Propane Adapter Fitting - 3/8" Male Flare x 1/4" Male NPT - Qty 1

(243)

$14.59

Question:

Should propane connectors have rubber O rings to prevent leaks?

asked by: Sodi

Expert Reply:

Different fittings require different methods of leak prevention so you won't always have a rubber O-ring on the fitting. For example, if we look at part # MBS77FR we see both a flare and NPT fitting. Using sealant tape # 37207-30025 or putty # 37207-30555 on the flare fitting can actually prevent the fittings from fully sealing together and you'll end up with a leak. On the NPT side not using some sort of sealant will likely allow a leak. POL fittings, like the # 204037-MBS you were looking at, will have an O-ring to help seal it into the other fitting and prevent leaks.

Each fitting style has its own installation requirements so you'll want to ensure you're following their style's guidelines.

expert reply by: Kevin C