2.5/3mm Thickness Solid Copper Flat Washer, Multi-size Copper Gasket Seal Ring for Hardware Repair & Replacement

Solid copper flat washers are practical hardware spare parts for sealing and fastening.

Made of solid copper material, it has good ductility and thermal conductivity. It can deform slightly under compression to fill gaps, providing reliable sealing performance. Prevent liquid and gas leakage at threaded joints, and distribute tightening pressure to protect workpiece surfaces. Ideal for equipment maintenance, field installation and machinery retrofit work.

Widely used for pipe fittings, hydraulic connectors, engine oil drain plugs and various workshop machinery sealing.

Custom Service: Custom sizes are available, please contact us for details.

Specifications
Size: (inner diameter x outer diameter x thickness , such as 6 x 14 x 3mm means 6mm inner diameter x 14mm outer diameter x 3mm thickness)
Surface treatment: annealing, pickling
Package included: 15 x Copper Washers