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二、静密封静密封“O”形环也是垫密片密封的一种。它比动密封的公差要求低,金属配合件的表面光洁度要求也不高,可以适当提高密封的压缩量。这种密封主要用作法兰、法兰形装配件、法兰形管接头、缸体端盖、阀盖和旋塞的密封。当用作法兰和法兰形装配件密封时,可密封的压力达25000磅/吋~2,相当于1763.7公斤/厘米~3,并允许有一定的压力波动。它不像压缩式垫密片那样出现很大的应变,因为这类密封只要拧紧螺母使金属面和金属面接触就行
Second, the static seal Static seal “O” ring is also a gasket seal a. It requires less than the tolerance of the dynamic seal, the metal surface finish with the parts is not high, you can properly increase the amount of seal compression. This seal is used primarily as a seal for flanges, flange assemblies, flanged fittings, cylinder heads, bonnets and cocks. When used as a flange and flange mounting seal, the sealable pressure reaches 25,000 psi, equivalent to 1763.7 kg / cm3, and allows for some pressure fluctuations. It does not exhibit the same strain as a compression pad, as it is only necessary to tighten the nut so that the metal surface touches the metal surface