SEALING DEVICE WITH ROTATION DETECTING ELEMENT

摘要

A sealing device with a rotation detecting element, capable of detecting rotation even if fluid such as engine oil is an object to be sealed. The sealing device has a stationary side sealing element (seal ring)(12) fixed to the stationary side (3), a rotation side sealing element (slinger)(14) installed on the rotation side (2) and made to be in slidably tight-contact with the stationary side sealing element (12), and a to-be-detected circular disc (15) for rotation detection attached to the rotation side (2) and positioned more on the atmosphere side than a sealing/sliding section (S) between the stationary side sealing element (12) and the rotation side sealing element (14). The outer peripheral edge of the to-be-detected circular disc (15) closely faces in the radial direction the stationary side sealing element (12) side.