气门与气门座密封环带越宽越好吗我们下乡时，发现有的柴油机机手在修理研磨气门、气门座时，特意将气门、气门座密封环带（以下简称密封环带）加宽。他们的道理是：密封环带不可能一下子出现麻点、蚀痕。如果密封环带出现较少麻点、蚀痕，剩下的部分一样还能起密封作用．... Valve and valve seat sealing ring with the wider the better When we went to the countryside, found some diesel engine repair grinding valve, valve seat, the valve, valve seat sealing ring (hereinafter referred to as the sealing ring) widened . Their truth is: sealing ring can not suddenly appear pitting, corrosion marks. If the sealing ring with less pitting, corrosion, the remaining part of the same can play a sealing role. ...