Thanks for the answers. I stopped in at my local hardware store (old school, not big box) on my way back from the homebrew store a little while ago. I was explaining to the guy what I was trying to do and without prompting, he said I would probably need to use a neoprene washer because it's food...
I'm getting ready for my first AG brew. I built a mash tun from a 36 qt Coleman cooler and I've driven myself crazy trying to get the outlet valve to stop leaking. I finally came up with a solution but it involved using a large neoprene washer on the inside of the cooler. So my question is...