The National 6.632" 410000 Series OD Plain Round Oil Seal is designed to provide superior sealing performance in a variety of applications. This oil seal is made from nitrile rubber, a synthetic elastomer that offers excellent resistance to oils, fuels and chemicals. This oil seal is designed to prevent leaks and ensure smooth operation of machinery. It can typically operate within a temperature range of -40 °F to 225 °F. This oil seal is ideal for use in automotive, industrial and agricultural applications. FleetPride is your First Click in Heavy Duty®.