[Tigers] Crossed wires - Part II

[Randy Smith]

Some of you guys probably know much more about this than I do, but Theo 
mentioning using silicone sealant reminded me about this.  Some RTV 
silicone sealants can be quite acidic.  I used some to seal a plastic 
cover to the aluminum case on my motorcycle and it had a nasty corrosive 
reaction with the aluminum in a relatively short period of time.  When I 
inquired, a very knowledgeable motorcycle mechanic explained that many 
RTV Silicone products are very acidic.  That is why the rear windows 
fell out (rusted out) of many of the early 80's Chevys, since they were 
an early application of the use of silicone as a sealant.  I believe the 
acid may be used as a catalyst for curing the RTV or something.  I also 
believe that there are silicone sealants out there that have a more 
neutral PH.  Anyone know more about this?  I've been trying to avoid RTV 
around any of my car body parts because of my previous bad experience.

-Randy

Randy Smith
INNER QUEST, Inc.
34752 Charles Town Pike
Purcellville, VA  20132
703-478-1078
540-668-6699
540-668-6253 fax

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