These are used with the metal evaporative loss flange at the top of the fuel tank NNA5954AA and AB.

Just in case these go NLA, as the more
common gasket is for the plastic evaporative loss flange, NNA5955AA, I thought I’d leave the dimensions. The gasket for the plastic flange has a different part number, so I don’t know what that gasket measures out to be.

Its 5-3/4” OD x 4-3/4” ID x 2.75mm thick.

If you are finding this useful, then you might also want to know that the hose connecting this flange to the metal pipe is a 5/16” to 1/4” rubber hose measuring 1-1/2” long. I used 3/8” Gates Barricade EFI hose and it seems to work. I’m going to go back in there sometime, and I’ll see if the 5/16” hose will work. (It should fit the flange, and should work better on the metal pipe!