VITON o ring, Silicone o ring, NBR o ring main type: AS 568 VITON o ring, JIS PG VITON o ring, GB VITON o ring. AS 568 Silicone o ring, JIS PG Silicone o ring, GB Silicone o ring, AS 568 Nitrile o ring, JIS PG Nitrile o ring, GB Nitrile o ring, AS 568 NBR o ring, JIS PG NBR o ring, GB NBR o ring.
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