泛塞封四氟材质泛塞封V型弹簧泛塞封规格90*80.6*7.195*85.6*7.1100*90.6*7.1115*105.6*7.1120*110.6*7.1125*112.8*7.1 聚四氟乙烯材质圈弹簧不锈钢压力0-45mpa