Step column sealing washer

The utility model discloses a step column sealing washer, including the sealing washer main part there is a bellying in two end edge departments of sealing washer main part along its axial symmetry ground shaping, the bellying has the both ends formation of sealing washer main part stair structure's counter bore. The utility model is suitable for an in the vehicle pneumatic braking data acquisition device, pressure sensor gathers the sealed pressured air of pressured air data department among the mainly used collection system, effectively prevents sewing of pressured air, makes vehicle pneumatic braking data acquisition device guarantee data acquisition 1's security when gathering the pressured air data. 本实用新型公开了种台阶式柱状密封圈，包括密封圈主体，在所述密封圈主体两端部边缘处，沿其轴向对称地成型有凸起部，所述凸起部将密封圈主体两端形成具有台阶结构的沉孔。本实用新型适用于车辆空气制动数据采集装置中，主要用于采集装置中压力传感器采集压力空气数据处密封压力空气，有效防止压力空气的漏泄，使车辆空气制动数据采集装置在采集压力空气数据的同时确保车辆运行的安全性。