ITEM NAME:10 pairs of 22 x 20 x 1.0 mm industrial rubber gasket oil-filtered O-rings X9X8 10 pairs of 22 x 20 x 1.0 mm industrial rubber gasket oil-filtered O-rings X9X8 For personal and professional workshops, garages and plumbing work. Black rubber oil seal, O rings, oil resistance, abrasion resistance and waterproof. O rings are donut-shaped rings used in industry to prevent or block liquid or gas in an application. Suitable for both static and dynamic sealing. Product Name: O Ring Material: rubber Color: Black Outer diameter: 22mm / 0.87 inch Inner diameter: 20mm / 0.8 inch Weight: 2g Package content: 20 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..Black rubber oil seal, O rings, oil resistance, abrasion resistance and waterproof. O rings are donut-shaped rings used in industry to prevent or block liquid or gas in an application. Material: rubber.