Product Name: O Ring; Material: NBR (nitrile butadiene rubber)Color: Black; Inner diameter: 12mm / 0.47 inchesOuter diameter: 18mm / 0.71 inchesWeight: 25gDescription:The NBR nitrile rubber o ring is oil resistance, abrasion resistance and waterproof.Widely used on automotive parts, machinery parts, requirements and sanitation, Househole electrical appliances and electronic instruments, etc.Package Contents: 100 x O RingsOnly 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.
