Not Compatible With: Aromatic and oxygenated gasolines; Automotive and aircraft brake fluids; Chlorinated hydrocarbons; Ethers; Ketones; Phosphate ester fluids Primary Sealing Material: Rubber Applications: Automotive air conditioner seals; High temperature flex boot seals; High temperature power steering seals; Higher temperature hydraulic seals; Middle cylinder liner seals Dash Size (in): 281 Temperature (°F): -40° - 275° Seal/O-Ring Type: Standard Compatible With: Abrasion resistant; Diesel fuels; Diester lubricants; Ozone; Petroleum oils, greases; Refrigerant HFC - 134a (Non-Freon); Silicone fluids; Steam; Water base engine coolants Cross Section Diameter (in): 0.139 Inside Diameter (in): 14.984 Outside Diameter (in): 15.262 Hardness (Shore A): 78 SAE AS568 Dash Size: -281 Color: Black Material Description: HNBR rubber is capable of service temperatures of -40 to 115C and is resistant to fuel, oils, lubricants and offers good abrasion and cut resistance. Coating: None Color Notes: Actual o-ring color may differ from image. Notes: Dimensions and material descriptions provided for reference only. Material: HNBR - Hydrogenated Nitrile