China Suppliers Factory Fastener Brass Copper Colored Metal Round Flat Plate Fender Washers Gasket Punched Ring Washer
Product Display
Frequently Asked Questions
What are copper washers commonly used for?
Copper washers are widely used as sealing gaskets in automotive, plumbing, and industrial applications. Their soft and malleable nature allows them to deform under pressure, creating a tight, leak-proof seal for fluids and gases.
Why choose copper washers over steel washers?
Unlike steel, copper is highly corrosion-resistant, offers excellent thermal and electrical conductivity, and is significantly softer. This ductility ensures a superior seal on uneven surfaces without damaging the mating parts.
Are copper washers reusable?
Generally, copper washers are intended for single-use because they work-harden and deform to seal the connection. However, they can be reused if they are annealed (heated to a red glow and cooled) to restore their original softness.
What temperature range can copper washers withstand?
Copper washers perform exceptionally well in high-temperature environments, typically maintaining their sealing properties at temperatures up to 400°C (752°F) before structural softening occurs.
Do copper washers rust or corrode over time?
Copper does not rust because it contains no iron. While it will oxidize over time when exposed to air and moisture—forming a greenish patina—this layer actually protects the washer from deeper, destructive corrosion.