ITEM NAME:7 mm x 1 mm rubber gasketet oil-filtered O-rings gasketets 500 pieces Z5D8 7 mm x 1 mm rubber gasketet oil-filtered O-rings gasketets 500 pieces Z5D8 oil resistance, hydraulic fluid resistance and water repellent. Flexible black rubber O ring seal. These devices are used on automotive components, machinery components, medical and bathroom equipment, household electrical appliances and electronic instruments, etc. Product Name: Rubber O Ring Material: rubber Outer diameter: 7mm / 0.28 Inner diameter 5mm / 0.2 inch Color: Black Thickness: 1mm / 0.04 Weight: 12g Package Contents: 500 (+/-2%) piece x O-rubber 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..Flexible black rubber O ring seal. oil resistance, hydraulic fluid resistance and water repellent. Material: rubber. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.