[Citroënbender]

A curly question, failure is not a desired option because it’s a sanitary application…

I want to silicone seal between glazed porcelain and an existing fillet of something like Knead-It. It’s a well-aged epoxy putty, rock hard with antiseptic smell when you grind it to a powder. It was my decision to leave this product largely in place because it could already be repairing unseen cracking. Why make more work for myself?

When a properly mixed epoxy putty is cured/aged, does it remain strongly alkaline? Acetic cure silicone is best for bonding to the glazed porcelain but I’m concerned it may debond from the epoxy. All advice appreciated!