Material: FKM (75) Material Description: FKM provides superior performance in most applications, including Air, Engine Oil, Diesel Fuel, Hydraulic Oil, Automatic Transmission Fluid and Biodiesel. Most FKM formulations should not be used with Coolant/Urea. FKM is effective in high temperatures, and has good abrasion and cut resistance. Compatible With: Diester lubricants; Halogenated hydrocarbons (above 100 Deg. C); Highly resistant to compression set; Petroleum fluids; Phosphate ester fluids; Silicone fluids; Some acids Inside Diameter (in): 2.11 Coating: None Cross Section Diameter (in): 0.14 Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image. Applications: High temperature applications requiring resistance to air, fuels, lubricants and hydraulic fluids Dash Size (in): 227 Temperature (°F): -40 - 350 Not Compatible With: Amines; Brake fluids; Engine Coolant; Fire Resistant Fluids; Ketones; Steam; Water