Spark plug gasket crush limiter

A spark plug includes a body of revolution defining a longitudinal axis. The body has a forward axial portion with external threads, and an intermediate axial collar portion defining an axially downwardly facing sealing surface. A first electrode and a second electrode extend from the forward axial portion and define a spark gap therebetween. A hex drive portion is disposed axially above the intermediate collar portion. A gasket crush limiter includes a wall that extends axially downwardly from the intermediate axial collar portion, defining an annular pocket formed by the wall and the forward axial portion. 一种火花塞包括限定纵向轴线的旋转主体。该主体具有前轴向部分和中间轴向轴环部分，该前轴向部分具有外螺纹，该中间轴向轴环部分限定了轴向朝下密封表面。第一电极和第二电极从前轴向部分延伸，并且在其间限定了火花间隙。六角驱动部分轴向设置在中间轴环部分上方。垫圈压碎限制器包括从中间轴向轴环部分轴向向下延伸的壁，限定由壁和前轴向部分形成的环形凹部。