I've been reading this and have to say ( I think) Permatex website identifies it as "Permatex® Form-A-Gasket® No. 2 Sealant" I've never heard it called 'black". I have used it as a gasket sealer but never in place of a gasket. For that I use Permatex Ultra Grey. When I hear Permatex Black, I think of only 2 Silicone based products. Not the gooey, non silicone stuff
When I search on Permatex's website for "Black" I get:
Permatex® Black Silicone Adhesive Sealant
Permatex® Ultra Black® Maximum Oil Resistance RTV Silicone Gasket Maker
Permatex® Black Rubber Sealant
I don't see anything with "Black" and "2" in the same product. No wonder I was lost in this thread.
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Chuck.
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