The Cutaway of Body/Stem/Seat ()Remark (备注):1. The temperature rating of O-ring al. (O 形密封圈额定温度)。Buna-N: -30 to 250°F(-34 to 121℃),Viton (Fluorocarbon): -15 to 400°F(-26 to 204℃)2. The other m
总之的英文The Cutaway of Body/Stem/Seat ()伶官传序教案Remark (备注):1. The temperature rating of O-ring al. (O 形密封圈额定温度)。Buna-N: -30 to 250°F(-34 to 121℃),Viton (Fluorocarbon): -15 to 400°F安全平台登录(-26 to 20