ITEM NAME:270 pcs Rubber O Ring Assortment Plumbing Hydraulic Air Gas Paintball 18 Descriptio n Description: Feature: 1.100% brand new and high quality. 2.Used for car, door, window, electric appliance, bearing, pump, carrier roller. 3.Assortment of O-rings with practical resealable plastic case. 4.A total of 18 most popular Sizes used. 5.Hydrogenated Nitrile Butadiene (HNBR), also known as Highly Saturated Nitrile (HSN) is a special class of nitrile rubber (NBR) and is for mission critical applications. 6.HNBR can be formulated to meet the application temperatures ranging from -45℃to 165℃, and HNBR is classified by ASTM as DH-type polymer. Specifications: Specification: Material: Rubber Color: purple Size: 21*11*3cm Item Type: O-Ring Type Size: 18 sizes 20Pcs - 5.29 x 1.78 20Pcs - 6.07 x 1.78 20Pcs - 6.8 x 1.9 20Pcs - 7.65 x 1.78 20Pcs - 7.8 x 1.9 20Pcs - 8 x 2 20Pcs - 8.8 x 1.9 15Pcs - 10.82 x 1.78 15Pcs - 10.77 x 2.62 15Pcs - 11 x 2 15Pcs - 12 x 2 10Pcs - 13.9 x 1.8 10Pcs - 13.95 x 2.62 10Pcs - 14 x 2 10Pcs - 15 x 2 10Pcs - 17 x 12 10Pcs - 17.17 x 1.78 10Pcs - 17.04 x 3.53 Package Included: 270pcs Rubber O Ring Assortment Note: Note: 1.Please allow a little size error due to manual measurement. 2.Please be reminded that due to lighting effects and monitor's brightness/contrast settings etc, the color tone of the website's photo and the actual item could be slightly different. High quality buy, happy buyï ¼ 270 pcs Rubber O Ring Assortment Plumbing Hydraulic Air Gas Paintball 18.Hydrogenated Nitrile Butadiene (HNBR), also known as Highly Saturated Nitrile (HSN) is a special class of nitrile rubber (NBR) and is for mission critical applications. Material: Rubber. Size: 21 11 3cm.