1,o ring seal kit 2,various specification and good quality 3,NBR,VITON, ... . 4,make O-rings by customer`s drawing o ring seal kit1. Material: NBR, EPDM, MVQ(Silicon rubber), VITON.etc2.We ... color is available5.Characteristics:high/low temperature-resistant.wearing-resistant,oil-resistant.6. Unit price depend on detailed material,design and ...