Product Details: The National 5.511" OD Fluoro-Elastomer Oil Seal is designed to provide superior sealing performance in a wide range of applications. This oil seal is constructed from a durable fluoro-elastomer material that is resistant to a variety of fluids, including petroleum-based oils, water and other chemicals. It is designed to provide excellent high temperature capabilities, making it ideal for use in high-temperature environments. This oil seal is designed to provide maximum uptime and performance, ensuring that your equipment is running at its best. With its superior sealing capabilities, this oil seal is perfect for use in a variety of applications, including automotive, industrial and agricultural. FleetPride is your First Click in Heavy Duty®.