ITEM NAME:Tattoo Machine Copper Crush Washer Flat Ring 12mmx16mmx1.5mm 50Pcs Q1N4 Tattoo Machine Copper Crush Washer Flat Ring 12mmx16mmx1.5mm 50Pcs Q1N4 Max Operation temperature: 350Celsius Max Operation pressure: 16MPa Melting point: 1083Celsius Copper Provides a Tighter Seal and Greater Heat Endurance than Steel and Rubber Washers. Widely applied in the flange and the connection of the chemical plant, electricity generating station, nuclear power station, and electronic, digital consumer products, hardware, precision instruments, electrical appliances, bearings, air pumps, water pumps, water valves, air cylinder, sealing the high pressure braking system, ect. Product Name: Copper Washer; Weight: 60g colour: copper Material: copper size: Inner Diameter: 12mm/0.4 inch Outer Diameter: 16mm/0.55 inch; Thickness: 1.5mm/0.06 inch Package Contents: 50 x Copper Washer Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Copper Provides a Tighter Seal and Greater Heat Endurance than Steel and Rubber Washers. 50 x Copper Washer. Material: copper. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.