ITEM NAME:10 pieces black rubber flexible O ring oil seal Sealing 8.6 x 5 x 1.8mm F4D8 10 pieces black rubber flexible O ring oil seal Sealing 8.6 x 5 x 1.8mm F4D8 Product Name: O Ring; ; Inner diameter: 5 mm / 0.2 Outer diameter: 8.6 mm / 0.34 Weight: 2g Material: rubber Color: Black 10 pieces of black rubber oil, O rings, high quality material, oil resistance, abrasion resistance and waterproof seal. O rings are donut shaped rings in the industry to prevent liquid or gas from closing or leaking in an application. Suitable for both static and dynamic sealing. Package Contents: 10 x O rings 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.