Features: High temperature resistance, abrasion resistance, corrosion resistance, others Item number: O-800 Purpose: hole seal, dust seal, fixed seal, shaft seal Whether it is standard parts: standard parts Color: Black Model: O-800 Scope of application: automobiles, machinery, decoration, electrical appliances, cylinders, bearings, pumps, water pipes, valves, doors and windows, spraying, rollers, chemical pipelines, others Specifications: 800pcs a box Shape: O-ring [Sufficient quantity] This O-ring combination set includes up to 800 components and 18 different sizes of O-rings. Quantity combination details: M3 * 1:100pcs M4 * 1:100pcs M5 * 1:80pcs M5 * 2:80pcs M6 * 2:80pcs M7 * 2:80pcs M8 * 2:70pcs M9 * 2:70pcs M10 * 2:25pcs M12 * 3:25 pcs M13 * 3:20pcs M14 * 2.5:20pcs M17 * 2.5:10 pcs M18 * 4:8pcs, M20 * 2:8pcs M22 * 2:8pcs M25 * 2.4:8pcs M27 * 3:8 pcs These rubber O-rings are made of nitrile-butadiene rubber (NBR), which is antistatic, oil-resistant, UV-resistant, heat-resistant, wear-resistant, durable, and has a long service life. [O-Ring Combination] Multiple Models: Universal O-Ring Nitrile Repair Kit for all shop floor and field service engineers. Our products are available in 18 different models to meet your different needs, with outer diameters ranging from 3mm to 22mm. Please refer to our size chart for more details. [Easy to use] Store in an orderly and resealable box with labels to save you organizing and choosing sizes. A variety of thicknesses and sizes are all in one box, making it very convenient to use. Metric O-rings protect against leakage of fuel oil or water, mechanical, hydraulic, and pneumatic connections; providing a safety seal for any oil, air, gas, and water sealing application (faucet, sink, filter). Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.