Structure:Single seal,independent of direction of rotation,conform to EN12756(DIN24960),multi-spring.

Application:oil,water,organic solvent and weak causticity medium.

Operating limits:59U,58U Unbalanced pressure:≤1.6MPa 
                               59B,58B Balanced pressure≤3.0 MPa     

                               Temperature=- 50～220℃   speed≤20m/s