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65 Belvedere Sealant

BigFlo

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In the center rear of the trunk is the housing that surrounds the gas filler tube. There is a rubberized sealant that seals the trunk floor to this housing. It is not seam sealer. I've replaced part of my trunk floor and needed to remove it. Does anyone know what this sealer is and what should be used in place of it? Was it used in only this spot to prevent gas fumes from seeping through? Does this mean that regular seam sealer will not prevent that?

trunksealant.jpg
 
I believe it is white putty some call it dum dum not sure if it is still available but maybe plumbers putty?
 
I believe it is white putty some call it dum dum not sure if it is still available but maybe plumbers putty?
Being a plumber I know for a fact that plumbers putty will dry out after a while used in that application
I don't know what they used for the seal, maybe some one who has re-sealed this will chime in
 
Being a plumber I know for a fact that plumbers putty will dry out after a while used in that application
I don't know what they used for the seal, maybe some one who has re-sealed this will chime in
Thanks for the input guys. I would agree that plumbers putty would dry out. The rubberized sealer was also painted over - not sure plumbers putty would hold paint.
 
Try the putty rv windows are sealed with. It will not dry out.
 
Yours specifically or in general?

I am just saying that the seam sealer is what I would use and I suspect what the factory used. Mopar slapped it on about everything that they thought might possibly open to the outside. You can get it in tubes and therefore not have any brush strokes if you would prefer that. I would be willing to bet that the factory slathered some around there just like everything else and it appears that the process they used for that did use some type of brush although I have seen it many times where it just looks squirted in.

I am not a "resto" guy so I could not say what you should or should not have, just saying that seam sealer is probably your answer. That said, if you are wanting it to look original, you definitely want white.
 
When you look at it you do see brush strokes in it.
No there are no brush stokes in it. Here is a pic of the original trunk - you can see at the very bottom of the pic the sealant drips over the side. This sealant was flowed on. It is also cream colored - not the color of the rest of the seam sealer used around the other seams. The underside of the sealer has air holes in it, more like it was a liquid when it went on. And I was able to remove it in one piece and it's still flexible. I don't think normal seam sealer would do that, especially after 55 years, lol. I thought this might be an easy one, but learning from others here that the factory might have used whatever they could get their hands on at the time. Normal seam sealer seems to be the option I have for this resto.

OrigTrunk.jpg TrunkSealantUnderside.jpg TrunkSealant3.jpg
 
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