Uxcell M5 Rubber Flat Washer 5mm ID 12mm OD 2mm Thick Sealing Spacer Gasket Ring,Black, 20 Pack

Made of flexible rubber features high temperature, wear-resistant and corrosion-resistant, strong sealing, and insulation. Rubber allows for more effective sealing of harder materials or irregular surfaces. Rubber washers can be used for sealing applications, i.e. in water, oil, air, etc. They can also be used for cushioning, reducing pressure and friction, increasing the contact area and providing a support surface for fasteners. When screwing a nut onto a nylon or glass item, it is recommended to use a rubber spacer as a cushion in order to prevent its surface from tearing.