<p>Widely applicable:Flat copper gaskets are used in a variety of industrial equipment, such as automobiles, aviation, ships and other power supply using threaded\/bolt-type connections for electrical connections, but also for household appliances.</p> <p>Premium material:The copper washers are made of high quality purple copper with high strength, good toughness and good electrical and thermal conductivity. Smooth surface, strong and lasting.</p> <p>Function:Sealing washers reduce the gap between bolts and nuts and increase the tightening force to ensure the stability of the equipment.</p> <p>12 Size set:Package includes 30pcs M5*9mm,30pcs M6*10mm,20pcs M6*12mm,30pcs M8*12mm,30pcs M10*14mm,20pcs M8*14mm,25pcs M12*16mm,25pcs M14*18mm,20pcs M12*18mm,20pcs M16*20mm,15pcs M16*22mm,15pcs M20*26mm.</p> <p>Reliable sealing:Annealing the copper gasket before use, better sealing, no gap, can effectively prevent the leakage of liquid or dust.</p>