SKF's advanced PTFE oil seal offers optimum performance in extreme temperature and fluid environments. Other benefits of this seal include; reduced friction, longer service life, easier assembly, reduced weight and compact design. Product Features:Machined rubber sealing edge provides greater accuracy and consistency, as well as a better sealing surface.The flanged design allows for easier and proper installation and helps avoid cocking.The latex bore coat seals the outer diameter leak path and helps compensate for minor bore imperfections.Extra dust lip helps keep harmful contaminants, such as dirt, out of the bearing and protects against rust and corrosion.