Paul, just to be clear, I assume you are referring to this chamfer (red arrows below)? I could be wrong but I believe these boxes were originally designed before RTV sealants really existed. I always thought the chamfer was to eliminate any burrs or casting flash so the case halves went together cleanly without interference. But that certainly does not preclude them as good candidates for liquid sealants now. I'm not disagreeing at all, just thinking out loud on the 'intended' reason for the chamfer. Steve, do you mean you spray the adhesive on the gasket before installing it? And do you coat both sides? To be clear, I am asking these questions (to both of you) for my own benefit. I've changed my habits for such procedures over the years as new products/techniques become available. But I never really know if I'm doing what is best. You know, teaching an old dog new tricks. So I appreciate the education, thanks for any feedback.