This is a top - notch Birel rear brake caliper piston O - ring seal sized at 28mm OD. It offers reliable sealing performance, ensuring the efficient operation of your rear brakes.

To use this Birel caliper piston O - ring, first make sure the caliper piston area is clean. Then carefully place the 28mm OD O - ring onto the piston. When installing, handle it gently to avoid any damage. For maintenance, check the O - ring regularly for signs of wear or damage. If you notice any issues, replace it right away to keep your brakes working well. Also, store it in a cool and dry place when not in use.