Item Type: O Rings Assortment Kit Material: Nitrile Rubber Temperature Range: -40 to +120 Uses: O rings are widely used in automobiles, faucets, hydraulics, key seals, industrial equipment, electrical appliances Package List 20 x Dia.8 Sealing Gasket Washers 20 x Dia.12 Sealing Gasket Washers 50 x Dia.6 Sealing Gasket Washers 20 x Dia.10 Sealing Gasket Washers 50 x Dia.4 Sealing Gasket Washers 50 x Dia.3 Sealing Gasket Washers 50 x Dia.5 Sealing Gasket Washers 1 x Storage Box 1Fully Equipped: This O ring assortment kit contains 260 O rings in 7 sizes. A wide range of sizes and quantities will meet your needs. 2Easy Storage: O rings assortment kit comes in a handy plastic organizer case with Sized Compartments. Each size comes with a label for easy picking and storage. 3Strong Performance: Sealing gasket washers has stable performance, with waterproof, oil resistant, excellent sealing, corrosion resistance, high temperature resistance, and wear resistance characteristics. 4Wide Application: Sealing gasket washers prevent leaks in fuel plumbing, machinery, hydraulic and pneumatic facilities repairs. Provide excellent sealing performance for related mechanical equipment with oil, air, gas and water as medium (faucet, sinks, filters). 5Environmentally Friendly Rubber: Sealing washers are made of environmentally friendly rubber, pollution free, radiation free, and odorless.