the reusable gasket is like an 1/8" thick hard black plastic with a printed silicone double bead on both sides. It is NOT rubber. They cost like $20 or $25. Not cheap in the short term, but more than pay for themselves in the long run. I've heard they're good for at least a half dozen reuses. Also they don't distort the pan sealing surface like a rubber or cork gasket, when the bolts are tightened.
