不锈钢加强型石墨复合垫片 密封法兰阀门垫 -180度可用 ¥1.28 密封圈o型圈氟胶外径8--500mm3.1/2.2mm粗细耐腐蚀高温O型圈 ¥0.49 EPDM三元乙丙橡胶O型圈密封圈280/285/290/295/300/305/310*4mm ¥1.00 氟胶O型圈外径160/165/170/175/180/185/190/195/200/205/210x10 ¥13.90 棕色氟胶O型圈耐高温酸碱19/20/21.2/22.4/23.6/25/25.8*2.65MM ¥0.40 金属缠绕石墨垫片耐高温法兰阀门密封垫DN25 80 150 40 400 ¥1.20