The SAS Type of Shaft Seal with the internal sealing lip prevents the fl uid from escaping the sealing chamber. In axial shaft seal the elastomer seal lip is axially spring loaded against the opposite mating face by the spider spring. The centrifugal force of fl uid accelerated by the shaft reinforces the sealing eff ect.The axial shaft seal consists of the elastomer membrane with a metallic reinforcement ring and a metallic spider spring is used as an energizer to the sealing lip.It has to be an interference fi t between the shaft & the housing for Static sealing against the shaft. The seal is generally press fi tted in the housing with the sealing lip against the rotating shaft. The seal should be installed in such a way that the sealing lip is fl ushed by the fl uid. The seal is generally press fi tted in the housing with the sealing lip against the rotating shaft. The seal should be installed in such a way that the sealing lip is fl ushed by the fl uid.