6V-5266: O-ring
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    6V-5266: O-ring



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    O-Rings are mainly used in static application as both axial or radial seals to prevent leakage and contamination.

    Cat® O-Rings are 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.

    Dimensions of our O-Rings are consistently held to tight tolerances to ensure they fit properly into seal grooves with the necessary seal compression.

    With over 2500 O-Rings in different sizes and materials, Cat® O-Rings are your best solution for your Cat and other mobile equipment O-Ring needs.

    Cat® sealing system uses a robust design, testing, and validation process. Buy the latest Genuine Cat seal to protect your investment.

    O-Rings are used in a wide variety of applications throughout the entire Cat® product line.

    • Coating: None
    • Primary Sealing Material: Rubber
    • Not Compatible With: Amines; Brake fluids; Engine Coolant; Fire Resistant Fluids; Ketones; Steam; Water
    • Temperature (°F): -40 - 350
    • Inside Diameter (in): 1.42
    • Notes: Dimensions and Material Descriptions provided for reference only. Color may differ from image.
    • Cross Section Diameter (mm): 3.5
    • Seal Inside Diameter (mm): 36.09
    • Dash Size (in): 221
    • Material Description: FKM provides superior performance in most applications, including Air, Engine Oil, Diesel Fuel, Hydraulic Oil, Automatic Transmission Fluid and Biodiesel. Most FKM formulations should not be used with Coolant/Urea. FKM is effective in high temperatures, and has good abrasion and cut resistance.
    • Compatible With: Diester lubricants; Halogenated hydrocarbons (above 100 Deg. C); Highly resistant to compression set; Petroleum fluids; Phosphate ester fluids; Silicone fluids; Some acids
    • Temperature (°C): -40 - 175
    • Cross Section Diameter (in): 0.14
    • Inside Diameter (mm): 36
    • Material: FKM (75), FKM - Fluoroelastomer
    • Seal/O-Ring Type: Standard
    • Applications: High temperature applications requiring resistance to air, fuels, lubricants and hydraulic fluids