Fuel Tank Sealing: safety concern with stringy sealant

Model Specific Discussions about the Sling TSi.
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kkim1972
Posts: 16
Joined: Sun Apr 25, 2021 12:08 pm
Location: Vancouver Canada

Fuel Tank Sealing: safety concern with stringy sealant

Post by kkim1972 »

I hope you builders are moving along with your projects. What are you the current builders doing about making sealant smooth and looking tidy along the applied area?

In the reference tutorial video for RV: https://www.vansaircraft.com/faq/fuel-t ... eo-series/

I noticed the sealants are generously applied and the stringy sealants forming everywhere. If they are detached and become floating debris inside the tank, I am afraid they may block the fuel flow, leading to engine performance issue or stoppage.

Please pardon me, I don't mean to scare anyone who already finished fuel tanks by raising a question. I would like to understand the best known practice.
Montreal
Posts: 35
Joined: Tue Apr 04, 2023 2:09 pm
Location: Houston, TX KSGR

Re: Fuel Tank Sealing: safety concern with stringy sealant

Post by Montreal »

The fuel pickup line has a strainer to block debris and downstream of that is a fuel selector strainer with a smaller mesh. Every couple years, it's not a bad idea to drain your tank by removing wing fuel drain valve to drain any contaminants like sealant debris and water. I did have a Mooney drain valve leak because a small amount of sealant debris kept the drain valve from seating properly after straining.
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Garage build flat kit Sling HWTD
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