Structure:Single seal,independent of direction of rotation,conform to EN12756
                    (DIN24960),push ring was stuck by drive sitting to avoid spring fall off.
                    Make stationary ring fixed,limit spring's move to avoid carbon ring
                    excessively abrasion.

Application:Sewage, causticity, grain medium,widely used for chemical pump
                       and sewage disposal system.

Operating limits:Pressure≤2.5MPa Temperature=-40～220℃   speed≤20m/s