Global O-Ring Nitrile (Buna-N) X-Ring Kit - 70 Duro Black - 382 Pcs (30 Sizes)

Nitrile (Buna-N) X-Ring Kit - 70 Duro Black - 382 Pcs (30 Sizes) This kit contains 382 Black 70 Durometer X-Rings in the 30 most popular sizes, providing an extremely low cost per size value. O-Rings conform dimensionally to AS568 universal series. Nitrile (also known as Buna, Buna-N, or NBR) is one of the most common sealing elastomers due to its resistance to petroleum-based fuels and lubricants and its relatively low price. Nitrile elastomers are copolymers of acrylonitrile and butadiene. X-Rings have a sealing function doubling that of an O-ring and can be used in numerous static and dynamic sealing applications. Compared to a standard O-ring, the four-lobed x-ring profile maintains twice the sealing surface, requiring less squeeze to maintain an effective seal and thus yielding lower friction and prolonged seal life. The four-lobed design of x-rings produces a more secure seal to counteract spiral twisting, making x-rings an exceptional choice in rotary sealing applications. Performs Well In: Petroleum-based oils and fuels; Aliphatic hydrocarbons; Vegetable oils; Silicone oils and greases; Ethylene glycol; Dilute acids; Water up to 100ºC (121ºF) Kit Includes: AS568 Dash No. 20 Each of 006 to 012 13 Each of 110 to 116 10 Each of 210 to 222 7 Each of 325 to 327