40mm o-ring (inner measurement) - 6mm thick, welded, made of steel , nickel-plated - 1 piece 40mm o-ring (inner measurement) - 6mm thick, welded, made of steel , nickel-plated - 1 piece Product detailsManufacturer Product details o-ring welded made of steel, nickel-plated Inner diameter: 40mm Thickness of ring: 6mm Measurements: A = 40mm, B = 52mm, C = 6mm The price is valid for 1 ring. Manufacturer