The WHT 005 651 A O‑ring is a sealing component for the ABS wheel speed sensor installation area. Its main functions are:
• Water and dust proofing: Prevent rainwater, sand, and dirt from entering the sensor mounting hole, avoiding short circuits or mechanical jamming.
• Corrosion prevention: Block corrosive substances such as brake fluid and salt from entering, extending the sensor’s service life.
• Stability maintenance: Use moderate elastic preload to ensure the sensor remains securely positioned, improving the accuracy of signal collection.
Although it is a small component, it is crucial to the normal operation of the ABS system and directly affects the vehicle’s braking safety and stability.