... Transparent 3.OD69.1xID50x1.45mmThickness Flat silicone ring gasket for ceramic pots with one air hole1.Material: 100% silicon material ... and stretchy, 40shore hardness2.Size: OD69.1xID50x1.45mmThickness3.Raw material for those gaskets: NBR, NR, SBR, EPDM, CR, ... Excellent oil-resistant, water resistant, ozone-proof.7. Used for compressor, air conditioner, machinery, electric appliance, dry food ...