An attempt was made to define the safety grade of flanged connections according to target leakage rates described in domestic gasket standards and tightness rates of joints stated in PVRC of ASME.
Mechanical seal: seal face, gasket and shaft seal, etc parts must be undamaged, otherwise will result in over leakage, sure to change parts with wear and tear or damage.
机械密封：密封面、密封垫及轴封等元件必须完好，否则将导致过度泄漏，对有磨损或损伤的元件必须更换。
3
The pressure of ascension in oil from sealing gasket place, or leakage of oil consumption and cause additional engine leakage faults.