Gasket material

You could try your local NAPA store, they can get Fel-Pro bulk gasket material in rolls of varying thicknesses from 12"x12" up to 36" x 15 yds, might be around $150 for something that size though. You could also try industrial suppliers like Grainger, McMasterCarr, Applied Industries, etc. that may be cheaper yet.

I like to try to match the thickness of the old gaskets as closely as I can, I keep supplies of gasket material on hand from 1/64" thick up to 1/16" thick, and cork-rubber sheet from 1/16" thick to 1/8" thick. That pretty much covers everything I get into.

Try a marine supply house in any major port city. I did a stint as a machinist in a shipyard and we had some HUGE gasket paper.

I will post 2nd time-- Go McMaster Carr- get "o" ring cord stock the right thickness- glue on 1 side of case [w crazy glue] w/ db; bead [ 1 twords inside & 1 tword ouside- fill in middle w/ Ultra blue {oil resistant silly seal- also from McMaster} and presto- a never leak gasket/ seal..👋

lots of aftermarket gaskets now come in "puzzle pieces". They fit together with joints so the pieces are mostly straight and not too long. I could see a special gasket punch being made to cut both sides of one of the joints.

I've had plenty of problems with those pieced together gaskets. They come apart at the joints so I make my own before I'll use them again.

I agree with OM, it is easier to make your own out of one piece material than it is fooling with material that you have to joint together.

Thanks for all the input guys. I went ahead and ordered some large sheets from my local Napa guy. 36" square. I'm on the bus with OM I hate to have joints in my gaskets, not that they haven't worked for me in the past but as big as this job has been I would like a solid gasket to go along with all the work and money. Thanks! 👋