Cross Section Diameter (mm): 1.78 Inside Diameter (mm): 9.27 Outside Diameter (mm): 12.83 Hardness (Shore A): 90 SAE AS568 Dash Size: -12 Color: Red Material: NBR - Nitrile,Nitrile (NBR) Material Nitrile (NBR) rubber is capable of service temperatures of -40 to 100C and is resistant to fuel oils, gasoline, ultra low sulfur diesel fuel and lubricants. Nitrile rubber is not recommended for applications that require resistance to bio-diesel or coolant. Coating: PTFE coating protects the O-Ring from installation damage and provides ease of assembly. Color Notes: Actual o-ring color may differ from image. Notes: Dimensions and material descriptions provided for reference only. Primary Sealing Material: Rubber O-Ring Type: O-ring Face Seal (ORFS)