... seal kit 2,various specification and good quality 3,NBR,VITON,KFM,SILICON,EPDM. 4,make O-rings ... by customer`s drawing o ring seal kit1. Material: NBR, EPDM, ... .We also make O-rings by customer`s drawings or samples. 3.we have various specification and More than ... to 270 C Tolerance +/-0.01 mm to +/-3.05 shippment FOB SHANGHAI/NINGBO or International express packing inner ...