Copper Washer Flat Sealing Gasket Ring Spacer for Car 7 x 15 x 1.5mm 20pcs

Flat washers made of copper,have a tighter seal and high heat resistance than steel and rubber washers. 20 x Copper Washers. Flat washers are used to support and spread the load across the baring area of the bolt and nut to prevent pull through.