12mm Inner Dia Copper Crush Washers Flat Sealing Gaskets Plate Rings 20pcs - 0.47''x0.79''x0.04''(ID*OD*T)
$10.28
Material:Copper,durable and sturdy. Function:Seal the sump plug nut to the sump tightly. Have a tighter seal and high heat resistance than steel and rubber washers.