O-Ring OD Lip Seals
For this configuration, anti-rotation is achieved by using an O-Ring to create a frictional interface between the seal and bore. Although a metal cased lip seal has higher pressure and speed rating, an O-Ring OD lip seal is a good choice economically when application parameters permit. Lower use applications such as food processing equipment, pharmaceutical equipment and environmental shaft excluders can benefit from this design. For friction sensitive applications, a lip seal with O-Ring OD should be considered. In service, a lip seal will experience a short period of break-in, after which time the seal element will reach a steady state condition. This steady condition allows very low, very consistent friction equating to low power consumption and heat generation.