Dash Size (in): 904 Seal/O-Ring Type: Standard Primary Sealing Material: Rubber Cross Section Diameter (in): 0.075 Inside Diameter (in): 0.346 Outside Diameter (in): 0.496 Hardness (Shore A): 75 Color: BLACK Material: NBR (75) Material Description: 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: None Color Notes: Actual o-ring color may differ from image. Notes: Dimensions and material descriptions provided for reference only.