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Old 04-30-2013, 09:25 AM
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re newing rubber trim seals

Looking for a method to renew a piece of exterior rubber seal,,
from a 94 GM truck high mount stop light that I am adapting to a different vehicle..

the seal is still flexable,, but has some weathering deteoration,real gray appearance and pin holing in it.
I am considering using black RTV,, that is slightly thinned down with something like mineral spirits,, and working that into the seal.

any ideas here?

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Old 04-30-2013, 09:38 AM
Brian Martin,Freelance adviser
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Why not buy a new one? I have never seen anything work in the way you suggest but it sounds interesting so if you try it post the results. But those lights are still available, how much are they?

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Old 04-30-2013, 07:38 PM's Avatar
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Down River supply south of Detroit used to sell me a SEM product called "Rubber Renew". It worked very well on old door rubber.

There is a similar product on Ebay now auction number 290702866394

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Old 05-06-2013, 11:09 AM
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mixed about a tablespoon of black RTV with about a teaspoon of mineral spirts, to make a thin paste, put two coats on using a small paint brush,
was able to re build the edges that had weathered away.
It did a nice job of filling in the pin holes and the gasket retained good flexability.

The mixtured dried to be more grey than black, so I shot a thin coat of SEM flex plastic trim black on it.

I'll see how it holds up.

2013 5 may rtv seal renew - a set on Flickr
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