QuanSeal™ SR series PTFE lip-rotary shaft seal The type for unpressurised conditions or where the pressure is only slightly above atmospheric pressure.This model has an extremely flexible sealing lip and an additional protective lip. Characteristics: Extremely flexible sealing lip; Improved frictional properties; Defined seal path width. Operating limits: Max. peripheral speed: 30m/s; Temperature range : -60 to 220C Max. pressure: 0.05Mpa Max. Centre offset: 0.2mm Max. concentricity tolerance: 0.3mm