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Old 05-19-2018, 12:34 PM
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Barry6547
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Default Conditioning rubber molding

My 2001 C-5 is in excellent condition and I have not noticed any deterioration/hardening of the rubber molding that lines the inside of the doors. The same for exterior rubber areas; however, since I plan to keep this car indefinitely, might it be a good idea to apply some sort of conditioner on the rubber? If so, does anyone have experience with such a product? A buddy of mine tried a product call Sil-Glide which is a lubricating compound containing silicone; however, even when he applied just a tiny bit to an area, it remained greasy to the touch. Any suggestions would bet appreciated.

Barry
Old 05-19-2018, 12:57 PM
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Baby oil suggested by trim shop
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Old 05-19-2018, 01:05 PM
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Originally Posted by The Rabbi
Baby oil suggested by trim shop
Since baby oil is just mineral oil, it should work.
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Old 05-19-2018, 01:24 PM
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GM recommends dielectric grease.

I use
Einszett Gummi Pflege Stift Einszett Gummi Pflege Stift
to condition and protect all the weatherstrip in my C5 and I really like it. No greasy residue like when you use dielectric grease.



Gummi Pflege is a special rubber treatment that conditions rubber weather seals on car doors, windows and trunks reducing squeaks, rattles, wind noise and potential water leaks. Gummi restores color to dried out rubber and keeps them elastic while protecting them against the damaging effects of heat, freezing temperatures and UV rays. It uses a petroleum free, water-based formula. Easy-to-use shoe polish type applicator makes application simple without the mess.

Last edited by GCG; 05-19-2018 at 01:26 PM.
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Old 05-19-2018, 02:31 PM
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Old 05-19-2018, 03:28 PM
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Default Regarding rubber seal conditioner

Originally Posted by jeff7251954

I actually have some 303 listed for various purposes including rubber seals...I did not know ...I had used it on the dash and it worked great....since the product you showed is marketed specifically for rubber seals, I will check it out. Thanks to you and everyone who has given me much appreciated feedback.
Old 05-19-2018, 05:09 PM
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303 as mentioned above, or silicone grease (including dielectric grease).

Anything that is petroleum based will eat away at rubber/plastic over time.

Last edited by ArmchairArchitect; 05-19-2018 at 05:09 PM.
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Old 05-19-2018, 08:35 PM
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For me, 303 works very well but it is not one-time treatment.
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Old 05-19-2018, 09:19 PM
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Sil Glyde (NAPA)
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Old 05-19-2018, 09:25 PM
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303 rubber protectant as mentioned... good stuff.
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Old 05-19-2018, 09:34 PM
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I use a product that is 100% silicone lubricant on mine (paste that came in a can from a body shop). Dielectric grease works very well also.
Old 05-19-2018, 09:49 PM
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My buddy used the Sil-Glyde and was most disappointed with it. The Sil-Glyde lubricating compound left a sticky residue on the seal around the car window and on the interior seal around the doors...very messy...I definitely will not use it.
Old 05-19-2018, 09:50 PM
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Originally Posted by WetMountainMan
303 rubber protectant as mentioned... good stuff.
The protectant designed just for rubber seals or the all-around protectant for rubber and other surfaces?
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Old 05-20-2018, 08:27 AM
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Originally Posted by jrprich
For me, 303 works very well but it is not one-time treatment.
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Old 05-20-2018, 04:57 PM
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Originally Posted by Barry6547
My buddy used the Sil-Glyde and was most disappointed with it. The Sil-Glyde lubricating compound left a sticky residue on the seal around the car window and on the interior seal around the doors...very messy...I definitely will not use it.
Well, I've used Sil Glyde for years.... never had that problem. Perhaps your buddy didn't read the directions:

"Apply with a clean cloth, brush, sponge, or finger. Use sparingly. Remove excess"

Globbing it on and leaving it would indeed be messy. It is about the viscosity of Vasoline in a tube....Once applied and wiped with a soft cotton cloth, leaves the rubber clean. Won't leave any marks or deposits on skin or clothing. It appears to do an excellent job of lubing rubber molding or seals, and helps keep my 'Vert from leaking and squeeking.

Last edited by av8or; 05-20-2018 at 04:58 PM.
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Old 05-20-2018, 05:47 PM
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Originally Posted by av8or
Well, I've used Sil Glyde for years.... never had that problem. Perhaps your buddy didn't read the directions:

"Apply with a clean cloth, brush, sponge, or finger. Use sparingly. Remove excess"

Globbing it on and leaving it would indeed be messy. It is about the viscosity of Vasoline in a tube....Once applied and wiped with a soft cotton cloth, leaves the rubber clean. Won't leave any marks or deposits on skin or clothing. It appears to do an excellent job of lubing rubber molding or seals, and helps keep my 'Vert from leaking and squeeking.
Is it dry to the touch after applying correctly?
Old 05-20-2018, 06:13 PM
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Originally Posted by Barry6547
Is it dry to the touch after applying correctly?
Yes, it is. I have a four ounce tube of the stuff, I think it will outlast me. What I do is use my index finger, and apply a light coating of Sil Glyde to the rubber molding... it makes it really shiny at first. Then I wipe it lightly with a old white Tee shirt. I just now tried it... and after applying and wiping the section I applied it to.... I used a clean spot on the Tee shirt to see if any stains were evident..... none.

I suspect that the 303 is every bit as good..... but I didn't know about it 7 or 8 years ago, so bought the Sil Glyde.

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Old 05-21-2018, 10:10 AM
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Another vote for Sil Glyde from NAPA.....Great Stuff
Old 05-21-2018, 11:20 AM
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Originally Posted by Barry6547
The protectant designed just for rubber seals or the all-around protectant for rubber and other surfaces?

See the photos above - the bottle just says - rubber seals. I assume it would be a good protectant for other rubber products...???
Old 05-21-2018, 01:22 PM
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Thanks guys! I just placed my 303 order from Amazon.


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