Petcock Thread Sealer

[Bob Wight]

I’m reassembling my ’57 Lightwin and looking for recommendations on what type of thread sealant to use on the fuel tank petcock.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Buccaneer]

I usually just use some Permatex Aviation sealer and have no problem,
but sure they’re something better for the application. Maybe I’ll learn
something.

Prepare to be boarded!

[Bob Wight]

I also thought about Permatex Aviation sealer.  I had to replace an in-line fuel filter on my ETEC 150 last year and used Rectorseal No. 5 on those fittings and it seems to work fine.  Just wanted to get some ideas on what other folks were using.

Bob

1937 Champion D2C Deluxe Lite Twin
1954 Johnson CD-11
1955 Johnson QD-16
1957 Evinrude Fastwin 18
1957 Evinrude 3022
1958 Johnson QD-19
1958 Johnson FD-12
1959 Johnson QD-20

“Every 20 minute job is only a broken bolt away from a 3-day project.”
"Every time you remove a broken or seized bolt an angel gets his wings."

[Author]

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