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Old 02-03-2020, 04:13 AM
FlyGuy65 FlyGuy65 is offline
Join Date: Oct 2015
Location: Houston (Kingwood), TX
Posts: 32
Default Proseal T-708 tank stiffening ring?

Fuel tank stiffening ring for access cover. Plans say sealant not needed, but I keep hearing “Proseal is cheap at this point”. I can understand why it’s not needed as the whole area will necessarily be sealed later - any reason to seal it?

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Old 02-03-2020, 10:25 AM
Ralph Inkster Ralph Inkster is offline
Join Date: Feb 2008
Location: Calgary, Alberta
Posts: 716

Your choice.
I chose to seal it on all the tanks I did. Same reason I choose to lay a seam on all inside flanges.
It's time to work on just my own planes, not everybody else's...
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Old 02-03-2020, 12:01 PM
GeoffP GeoffP is offline
Join Date: Sep 2018
Location: Warrimoo, NSW, Australia
Posts: 86

I didn't seal it. Once the access cover goes on and is sealed as per plans you shouldn't have leaks from that area.
RV-9, Tail Feathers done, Wings started
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