... Rubber o-ring 1.EPDM,PVC, material,extrusion 2.Application:Mainly used in marine hatch cover 3.According to your drawing Rubber o- ... (AS-568 standard, PG standard and any non-standard o-ring), washer, oil seal, cup seals, gaskets, U-rings, V-rings, Y- ... rubber used in making O Rings 1. Nitrile O Ring 2. Silicone O Ring 3. Viton O Ring 4. Ethylene Propylene 5. Neoprene O Ring etc 6. Custom shapes ...