What will I get?Color: Black, BronzeMaterial: Carbon Steel, Nitrile Butadiene RubberFit for Size: M16Outer Diameter: 21.5mmInner Diameter: 16mmThickness: 2mmRubber Hardness: 60ARubber Working Temperature Range: -20°C to 100°C (-4°F to 212°F)Package Contents: 10 x Bonded SealsWhat is this?A bonded seal is a type of washer used to provide a seal around a screw or bolt. Consists of an outer annular ring of carbon steel and an inner annular ring of nitrile butadiene rubber that acts as a gasket.Are there any advantages of the product?The nitrile rubber is bonded by heat and pressure to the outer ring, which holds it in place. This structure increases resistance to bursting, increasing the pressure rating of the seal.
eBay