EPDM 三元乙丙O型圈8/9/10/11/12/13/14/15/16/17/18/19/20*3.1MM ¥0.10 黑色耐油丁晴橡胶O型圈密封件35/36/37/38/40/42/44/45/48/50*5MM ¥0.20 氟胶O型圈外径295/300/310/320/325/330/335/340/350/360/370x10 ¥9.50 EPDM三元乙丙橡胶O型圈密封圈107.5/112/117/118/120/125*1.8mm ¥0.19 四氟垫片定制加工高温聚四氟乙烯法兰铁氟龙塑料PTFE压力表密封圈 ¥1.60 液压o型圈防水丁晴橡胶圈20 21 22 23 24 25 26 27 28 29*线径1.5 ¥0.29