oil pan drain plug seal purchased from a local auto parts store, copper "o" ring, but most of the filter I have purchased came with one. got a tractor supply store near you?
Thanks for the responses. The two filters I've bought so far have just included the gasket that goes between the top and the canister. Red's has one listed on their site but it's out of stock. That 8N tractor site looks like it's the right thing. You would think it would come with every new filter as the service manual recommends changing it along with the filter.
Isn´t that gasket a fiber washer...not uncommon in plumbing.
I´ll dig in the drawers to see what they are made of the image in my head says red/brown fiber material.