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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,640
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Most silicone sealants are indeed acid curing. The acetic acid cure is that distinct smell most silicones have. But, there are non-acid curing silicones. Permatex ultra black is one of them.
The non-acid curing thing is often mentioned by three piece wheel manufacturers. I guess they don't like the acid on the 6061 aluminum wheel shells?
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Kevin L
'86 Carrera "Larry"
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