O形环 O-ring

井口变扣O环 O-ring for wellhead adapter ; ring for wellhead adapter

油泵下部O环 Lower O-ring pump

橡胶O环 O shaped rubber circle

O环存放架 O-ring storage rack

固定环O环 Fixed-Seal O-ring

固定环后O环 Fixed-Seal Rear O-ring

固定环座O环 Fixed-seal socket O-ring