Black rubber molding degeneration - Mercedes-Benz Forum
 
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post #1 of 10 (permalink) Old 01-21-2018, 10:32 PM Thread Starter
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Black rubber molding degeneration

Hey all... just a quick question to see how everyone is handling the black molding at the bottom of the windows becoming soft and leaving marks everywhere.

Mine are leaving streaks on anything that touches them - drying towels, hands, clothes, washing mitts, etc.

Is there some kind of sealer that will stop this from happening?

I love the ML series ( this is my 4th- itís a 2003 ML320 with 200k mikes) but I hate the streaks!
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post #2 of 10 (permalink) Old 01-22-2018, 01:26 AM
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Front doors, rear doors, all doors?
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post #3 of 10 (permalink) Old 01-23-2018, 07:10 AM Thread Starter
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All 4 doors. Itís the rubber on the outside above and below the windows.
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post #4 of 10 (permalink) Old 01-23-2018, 10:20 AM
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Maybe too late for yours now, but every so often, I wet a pad/rag with some "rubber lube" and rub on rubber moldings. This seems to give them longer life. Be careful which lube you use because, over time, some may damage the rubber. Don't recall what brand I have used, but will update response when I get home later today. Try anyway - nothing to lose at this point.
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post #5 of 10 (permalink) Old 01-23-2018, 02:18 PM
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This is really messy but I have used a scotchbrite and lanolin spray on them. It freshens them up but it will have to be done a view times to rejuvenate them. I recently 2pak painted the removable bottom rubber in satin black. Looks good as new.
You can mask the door up a little if you donít want black shit all over your doors when cleaning them with a scotchbrite and lanolin.


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post #6 of 10 (permalink) Old 01-23-2018, 02:25 PM
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I use this on all exterior black plastic and rubber:
Blue Magic NA127-24PK Black Jack Tire Shine Towelette - just copy and past that to search on Amazon.
This stuff restores all black plastic or rubber parts of my exterior to like new condition.
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post #7 of 10 (permalink) Old 01-23-2018, 06:22 PM Thread Starter
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Thanks for the tips! I have a bottle of AT-205 ATP Re-Seal Leak Stopper I'll try.

I was advised to spray this on my bushings on my CLK to stop some suspension squeeks. It really worked great!
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post #8 of 10 (permalink) Old 01-24-2018, 03:47 PM
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Quote:
Originally Posted by MercedesMikeNAtlanta View Post
Thanks for the tips! I have a bottle of AT-205 ATP Re-Seal Leak Stopper I'll try....
Read the bottle carefully to ensure it does not eat or harden rubber, seeing that it's a sealant.

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post #9 of 10 (permalink) Old 01-25-2018, 07:17 AM
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two GREAT products !!!

Seeing how you are in the Atlanta area, this product is right down your alley...

A product called Bumper Magic from the manufacturer Auto Magic, which is based in Marietta just off of Glover Street.

I have been using this stuff for close to twenty years and it is fantastic for the hard rubber trim on vehicles. It is a heavy silicone-based lubricant that is perfect for the trim you describe. It is also excellent for the 98-99 ML's that have the black plastic exterior mirror housings. I bought a quart of this stuff years ago and I've still got the original bottle. I use a much smaller container (similar to a catsup squirt bottle) and refill it every few years.

For full on rubber items like tires, door seals and under the hood, I use 303 marine protectorant, and it is great for extending longevity of any soft rubber trim....

BOTH of these products are OUTSTANDING !!
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post #10 of 10 (permalink) Old 01-25-2018, 01:05 PM
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Quote:
Originally Posted by Darkmann View Post
Read the bottle carefully to ensure it does not eat or harden rubber, seeing that it's a sealant.
It will not harden it. The stuff is actually a decent product.
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