Rubber Seals Meet ROHS directive. Quality certificate: ISO9001:2000 Rubber SealsMaterial: EPDM, ... : Square rings, quad rings, back-up rings, V-rings, T-seals, wear ringsHardness: 30SH-90SH.Color: Black, Transparent, Green, Red, Yellow ... : according to the QTYOEM or ODM orders are welcome Rubber Seals