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'67 250SL, '87 300SDL
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255 Posts
Discussion Starter #1
All,

I finally have some time to tackle surface rust around the sunroof cut out of my SDL.

I am planning to remove the old seal, grind off the rust, treat the areas with POR-15 and repaint them before installing a new seal which I already have.
Even though the rust doesn't seem to go very deep, I am fairly sure I'll have to rebuild some of the edges to flatten the corroded areas before I can repaint them.
Does anybody have suggestions on what compound to use? I can foresee this to be total PITA since the corrosion is right on the edge where there isn't a lot of surface for the compound to adhere to. Is there any special stuff for this? It has been ages that I had to do some kind of patching so I am not familiar at all with what's available anymore.
Also, when I install the new seal (126 780 00 98 - it's the rubber/felt ring that comes in one piece) do I have to apply anything to the seal (the part that slides in the groove) before pushing it in?

Thanks in advance!
 

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Premium Member
2012 CL550 4MATIC Coupe
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9,992 Posts
Some silicone grease I used.
 

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Registered
1986 Mercedes Benz 300SDL
Joined
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10 Posts
All,

I finally have some time to tackle surface rust around the sunroof cut out of my SDL.

I am planning to remove the old seal, grind off the rust, treat the areas with POR-15 and repaint them before installing a new seal which I already have.
Even though the rust doesn't seem to go very deep, I am fairly sure I'll have to rebuild some of the edges to flatten the corroded areas before I can repaint them.
Does anybody have suggestions on what compound to use? I can foresee this to be total PITA since the corrosion is right on the edge where there isn't a lot of surface for the compound to adhere to. Is there any special stuff for this? It has been ages that I had to do some kind of patching so I am not familiar at all with what's available anymore.
Also, when I install the new seal (126 780 00 98 - it's the rubber/felt ring that comes in one piece) do I have to apply anything to the seal (the part that slides in the groove) before pushing it in?

Thanks in advance!
Did you ever get any advice on this? I am about to do the same, and would love to hear how yours turned out.
 
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