Exquisite MaterialThe o ring washers are made of nitrile rubber(NBR) with high resilience and high tensile strength, which is not easy torn apart, have good airtightness and high temperature resistance, durable for long time use.<br> Powerful FunctionsThe rubber washers assorted can increase contact area, reduce pressure and protect parts and screws, which can bear the temperature of 120 degrees centigrade, and it is wear-resisting and good at oil-proof.<br> Easy to CarryThe durable separeted space keep these rubber o rings to separate, which is very convenient for storage and picking, and prevent these o ring washers mixed up and make you carry rubber washer set easy.<br> Wide ApplicationsThese seals rubber o rings washers with a higher electric resistance capability are ideal for garages, general plumbers, mechanics, workshop, car, door, window, electric appliance, bearing, pump, carrier roller.<br> What You Will GetYou will receive 200 pcs rubber O-rings in 15 commonly used sizes, which are small, delicate, fine, and strictly functional, accommodate a wide variety of tasks. The sufficient quantity is enough to meet your long-term use.