Join Date: Mar 2008
Location: Downers Grove, Illinois
Re: What's the best weatherstrip lubricant/protectant?
I am not a chemist (my father is), but I can tell you that I have never found anything to work better than silicone on Rubber. Nothing! I have 41 years of experience with that. With saying that, I don't understand the process for how all rubber is made and there is some product out there called “foam rubber” (a chemist might know the difference, or if it is even really rubber) that silicone does not really work so good for.
A lot of this weather stripping on these cars looks to me like it is foam rubber. When you look at these cars and how long this weather-stripping lasts (like RamAirDave said above) and how easy it is to replace, I am not really sure why you would try to preserve it, when it seems to last about 39 years!!!? I was even really wondering it you were asking how to “Restore the old one?” That would be a different question.
Even with saying all that I have above, when trying to “preserve” my new, I just do what Jim said. I “wipe” it in silicone as a cleaner. Just enough to clean the outside SKIN and make it look really good. I do not use enough to penetrate into the pores of the inner part. I have been doing this for years, but NOT to really preserve (I guess you could say I am trying to preserve the skin.) My theory is that, if it is “Clean,” THAT will preserve it. I have never found this to damage the weather-stripping or skin.
Finally, I have never use the Dupont Product that Dave mentioned above, Krytox Fluorinated Grease. It sounds like a tooth paste!!!!!! I would be very surprised if it were not a great product. But, Dave, if what you are really trying to do is RESTORE the old – let us know that. None of what I have written here or anything else above will do that.
Hope this helps.
Last edited by Dale8346; Oct 4th, 08 at 08:10 AM.