Paronite sheet 0.6 mm thick, size 300x200 mm. Gaskets are cut from it to match the flange shape: for intake boots, covers and other joints where sealing under load and heat is needed.
The sheet comes in handy when the right ready-made gasket is not available or was torn during disassembly. Transfer the outline from the old gasket or trace the part, and punch the holes with a hollow punch. Choose the 0.6 mm thickness by the gap in the joint, making the gasket no thicker than the original.
