... ring,FKM o-ringRubber Seal ring,seal circle,rubber seal ring2)AS568, JIS B 2401, Hardnes50-90 SHOREColors: black, blue, brown, green, red ... ,white, purpleROHS approvedHardness:60-90shoreStandard,: 1.JIS B 2401 2. AS568A 3. GB /T3452.11)Rubber O-RING NBR o-ring, ... ring,FKM o-ringRubber Seal ring,seal circle,rubber seal ring2)AS568, JIS B 2401, Hardnes50-90 SHOREColors: black, blue, brown, green, red ...