KESARIA manufacture O-Ring Box Repair Kit- 5B contains a total of 382 Pieces of O Rings in 30 assorted sizes that are oftenly used in various industrial applications. The O Rings are made up of soft, pliable & durable Nitrile Rubber Material (NBR). Kesaria O Ring Repair Kit- 5B compose of hard-wearing saffron storage case with a detailed label on the top indicating the sizes & quantity of O Rings in each compartment. The hardness rating of our O rings on a Shore-A scale is 40~90 Durometer & can be used across a wide range of temperature from -45 to 130 degree celsius. Kesaria Repair Kit O Rings can bear the high impact of oil, water-tightness, corrosion & have high tensile strength that makes them suitable for high dynamic loads & abrasion resistant as well as their super pliable construction design stands for long term service & durability. Kesaria O-Ring Repair Kit is used for a wide range of applications such as Plumbing, Machinery, Hydraulic & Pneumatic Repair & Automobile etc.