Quote: that fitting is already designed with an o ring groove. you need a special o ring to seal it. the washers that I'm making will have the pocket to use this o ring on one side and a groove for an o ring on the other. i'll post a pic after lunch so everyone gets it.
I machine the groove so the o ring stays more on the face and doesn't get squished toward the center where it might get cut easier by the edge of the hole cut in the pan...at least that's what I was thinking the first time I did it and couldn't find the o-ringed washers locally the day I needed them...
