I’ve used a few ungasketed 3/8 flanges and never had even a single exhaust leak, plus, if the heat is well controlled when it’s welded, i doubt i’ll need to machine off more than 1/16
I’ve used a few ungasketed 3/8 flanges and never had even a single exhaust leak, plus, if the heat is well controlled when it’s welded, i doubt i’ll need to machine off more than 1/16