rubber seal ring 1.Material:HNBR 2.High/Low temperature resistance,Oil resistance, ... 3/8 5/8 3/4 5/16 rubber seal ring 1)We have kinds of material : NBR,HNBR,EPDM,SILICONE ... or according to customers’ order quantityPayment TermT/T or L/C, 30% as deposit, balance before shipmentMOQ1000pcsPackaePolybag and cartonSample lead time7 ...