Coating: None Cross Section Diameter (in): 0.14 Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image. Material: HNBR - Hydrogenated Nitrile Material Description: HNBR provides excellent abrasion and cut resistance. It works well with Air, Engine Oil, Diesel Fuel, Hydraulic Oil and Automatic Transmission Fluid applications. Some formulas may be used with Coolant/Urea. Do not use with Biodiesel. Dash Size (in): 231 Inside Diameter (in): 2.61