国产精品国产av片国产-久久国语露脸国产精品电影-三级4级全黄60分钟-嫩草伊人久久精品少妇av

產(chǎn)品詳情

523型機(jī)械密封

Operating limits
密封腔壓力: 0~3MPa
Pressure in the sealed chamber: 0~3MPa
密封腔溫度:-20℃~+150℃
Temperature in the sealed chamber:-20℃~+150℃
線速度:≤20M/sec

Linear velocity:≤20M/sec