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wing root seal - maintenance

ABS Full Member
Posts: 3

I have a 1979 A36 and the wing root seal (?) - the black rubber seal between wing and fuselage - or gap band - is starting to crack and deteriorate. I was thinking about apply the boot master protection for icing boots to the rubber band to help preserve it (prep master and shine master). I was wondering if others have done this and what experience they had and or if there was some other technique to preserving this band.

Model: Bonanza A36
Posted 2/25/2017 - 3 years ago
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ABS Full Member
Posts: 29

There's an individual named guy gimby who sells a kit for $200 ish to replace the seal. You can find him and more info on BEechtalk.com.

Posted 4/23/2017 - 3 years ago
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ABS Full Member
Posts: 2

Does anyone know how hard it is to replace these root seals?

Posted 5/12/2017 - 3 years ago
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ABS Full Member
Posts: 33

When my plane was painted, a new seal was attached; however, it has not been a very nice experience. Bob Ripley might be able to address the issue on my bonanza. The slot between the wing and fuselage was of variable thickness and on several places the center section that should have gone into that space was cut off and the strip glued. That has not been successful on my S 35.

Posted 9/6/2017 - 2 years ago
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ABS Full Member
Posts: 303

The wing root seal is unfortunately installed on the wing before the wing goes on the aircraft - at least that is how the factory does it. As a result, there are times when it is very difficult to put a new seal on without either trimming some portion of the seal that goes under the skin off if there is insufficient clearance between the fuselage and wing skin, slightly trimming the wing skin (if there is enough skin edge), or loosening wing bolts (uppers only) enough to get the seal in and then retorquing the hardware. The GeeBee seal that is mentioned above is a good seal, although I have found the adhesive needs to be mixed a little heavy on the activator to really work. Also, after really cleaning and scuffing the seal, at least one coat of adhesive needs to be applied liberally to the seal and wing. I have found in the tight corner areas, it is best to let the adhesive fully dry and apply a thin coat to one side only as you apply the seal. This seal is now offered through Aircraft Spruce and Specialty Co.

Posted 9/7/2017 - 2 years ago
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wing root seal - maintenance