150PCS Copper Sealing Washer Assortment Kit, High-Purity Red Copper Flat Gasket Set for Automotive, Marine & Industrial Sealing Applications
150PCS high-purity red copper sealing washer assortment kit, featuring 13 versatile sizes for automotive brake systems, marine engine maintenance, industrial hydraulic fittings, and heavy machinery repairs. Made from 99.9% pure red copper, these flat gaskets deliver superior ductility, heat resistance, and saltwater corrosion protection, ensuring a tight, leak-proof seal even on rough or worn surfaces. The robust, compartmentalized storage box keeps sizes organized for quick access, making it ideal for professional mechanics, marine technicians, and industrial maintenance teams.