Automotive rotating oil seal having leakage storing and pumping-back functions

The invention relates to an automotive rotating oil seal having leakage storing and pumping-back functions. The automotive rotating oil seal comprises a hollow cylindrical inner oil seal body provided with an outwards-extending outer end face at the upper end and an outer oil seal body located on the outer side of the inner oil seal body and is characterized in that an upwards or downwards bent main seal body in contact with the outer oil seal body is bonded below the outwards-extending outer end face of the upper end of the inner oil seal body, a leakage storage cavity is formed in a sealed space defined by the main seal body, the inner oil seal body and the outer oil seal body, and a one-head or multi-head spiral oil return groove is formed in the main seal body. 本发明涉及种具有储漏及回泵功能的车用旋转油封，包括呈空心圆柱形且上端具有向外延伸外端面的内油封体和位于内油封体外侧的外油封体，其特征在于，所述内油封体上端的向外延伸外端面的下方粘结有向上或向下弯曲且与外油封体相接触的主密封体，所述主密封体、内油封体与外油封体组成的密封空间内形成储漏腔，所述主密封体上设有单头或多头螺旋回油槽。