Kit Contains: Seals Primary Sealing Material: Rubber Seal/O-Ring Type: Standard Cross Section Diameter (in): 0.103 Inside Diameter (in): 1.049 Outside Diameter (in): 1.255 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. Hardness (Shore A): 90 SAE AS568 Dash Size: -121 Coating: PTFE coating protects the O-Ring from installation damage and provides ease of assembly. Color: DARK BLUE Color Notes: Actual o-ring color may differ from image. Notes: Dimensions and material descriptions provided for reference only.