148-2903 Caterpillar O-ring
Cat® O-Rings are used in static sealing and some dynamic applications.
Cat® O-Ring 148-2903 is made from materials that are matched to the fluids, temperatures and pressures found in Cat engines and machines. The materials resist wear and extrusion, and provide superior resistance to seal compression set. In addition, certain Cat O-Rings are coated with PTFE to minimize seal twisting and cutting during seal installation, all the characteristics and compatibilities of the Cat® O-Ring 148-2903 are detailed below.
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.
Cross Section Diameter (in): 0.139
Dash Size (in): 218
Hardness (Shore A): 95
Inside Diameter (in): 1.234
Material: FKM, FKM (95), 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.
Notes: Dimensions and material descriptions provided for reference only.
Outside Diameter (in): 1.512
Primary Sealing Material: Rubber
SAE AS568 Dash Size: -218
Seal/O-Ring Type: Standard