1 Rubber O-Ring watch gasket used to keep your watch water resistant. 2 Made of rubber material, flexible and wear-resistant, durable to use. 3 Including 500pcs of the package, meeting your different needs. 4 Excellent replacement for the watch back cover seal gaskets. 5 Suitable for watchmakers and watch repairing workers to use.

What's in the box
500 x O Ring Gaskets