50/100/120 Copper Washer Gasket Kit Flat Ring Assortment with Box for Automotive and Industrial Settings (50pcs aluminum sheet)

Description

🔧 Seal it right, seal it tight — the copper kit pros trust!

This Nutup Copper Washer Gasket Kit offers 50, 100, or 120 high-quality red copper flat washers in a compact, labeled box. Designed for professional-grade sealing, these washers provide excellent heat resistance, electrical conductivity, and wear durability. Sized to fit common metric bolts from M4 to M14, they ensure reliable load distribution and leak-proof joints across automotive, industrial, and household applications.