How do I seal propane fittings?

Written by jay angel
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How do I seal propane fittings?
The nozzle that connects the tank to the hose is termed a compression fitting. (gaz image by thierry planche from

Propane is used as a cooking gas and sometimes as a heating fuel. Great care must be exercised when using propane because of its explosive qualities. Fittings, also known as compression fittings, are used to connect lines that transfer gas from a storage tank to the appliance where it will be burnt. Make sure that these fittings and the hoses that accompany them do not leak.

Skill level:

Things you need

  • Propane hose
  • Propane compression fittings
  • Teflon tape
  • Propane tank
  • Regulator
  • Spanners
  • Soapy water

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  1. 1

    Wrap Teflon tape around the threads of the compression fitting.

  2. 2

    Insert the connection at the end of the hose onto the compression fitting and twist until it is hand tight. Continue twisting the hose end with a wrench until it is tight.

  3. 3

    Test the connection for leaks by splashing a small amount of soapy water onto it. After several minutes, bubbles will begin to appear if there is a gas leak. Tighten the connection, and then repeat the test. If bubbles appear a second time simply replace the compression fitting and hose. Repeat the test on your new fitting and hose.

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