Temperature (°F): -67 - 275 Compatible With: Alcohols; Automotive brake fluids; Hot, cold water; Ketones; Ozone and sunlight; Phosphate ester fluids; Silicone fluids; Some dilute acids; Steam (200 Degree C max); Steam (400 Degree F max) Applications: Ebullient cooled engine cooling systems Dash Size (in): 15 Not Compatible With: Aromatic fuels; Diester lubricants; Petroleum fluids Coating: None Cross Section Diameter (in): 0.07 Inside Diameter (in): 0.551 Outside Diameter (in): 0.691 Hardness (Shore A): 70 SAE AS568 Dash Size: -15 Material: EPDM (Ethylene-propylene diene) Material Description: EPDM rubber is capable of service temperatures of -55 to 121C and is resistant to air, water and glycol based fluids such as engine coolant and diesel exhaust fluid. EPDM rubber is not recommended in applications that require resistance to fuel oils, gasoline, diesel fuel and lubricants. Color Notes: Actual o-ring color may differ from image. Notes: Dimensions and material descriptions provided for reference only.