This O-Ring Kit Assortment is perfect for industrial applications. Made of high-quality Buna-N material with a hardness of NBR 70, this kit features a range of 30 different sizes, totaling 382 pieces. The kit includes O-rings in the 5C - METRIC model from the trusted brand XERKIN, and is manufactured in India. Ideal for use in mechanical power transmission and industrial automation & motion controls, this kit is a must-have for businesses in need of reliable seals, O-rings, and gaskets.