Compatible With: Diester lubricants; Halogenated hydrocarbons (above 100 Deg. C); Highly resistant to compression set; Petroleum fluids; Phosphate ester fluids; Silicone fluids; Some acids Seal/O-Ring Type: Standard Primary Sealing Material: Rubber Temperature (°F): -40 - 350 Dash Size (in): 225 Applications: High temperature applications requiring resistance to air, fuels, lubricants and hydraulic fluids Not Compatible With: Amines; Brake fluids; Engine Coolant; Fire Resistant Fluids; Ketones; Steam; Water Cross Section Diameter (in): 0.139 Inside Diameter (in): 1.859 Outside Diameter (in): 2.137 Hardness (Shore A): 75 SAE AS568 Dash Size: -225 Color: Black Material: FKM - Fluoroelastomer Material Description: FKM rubber is capable of service temperatures of -40 to 150C and is resistant to air, fuel (including bio-diesel), lubricants and oils. FKM rubber should not be used in applications that require resistance to water or coolant. Coating: None Color Notes: Actual o-ring color may differ from image. Notes: Dimensions and material descriptions provided for reference only.