FEATURES 1. For stepped shafts 2. Single seal 3. Balanced mechanical seal 4. Super-Sinus-spring driving and compensating functions 5. Independent rotation direction 6. a variety of mechanical seals about QHH7 a, Integrated pumping device available (H7F, H75F) b, seat cooling available (H75G115) Advantages 1. Universal applications(normal mechanical seal) 2. Excellent compensation functioning equivalent, effective pressurization 3. interchangeable faces to keep it available easily 4. Extended selected materials 5. Flexible torque transmissions 6. Bilateral rotation: alternative rotation direction; easy install and uninstall 7. Clean assembly 8. Long product lifecycle. Energy saving, environment protection. 9. Installation faults were avoided, cost-effective. 10. Straightforward and easier specification for pre-assembly unit. Time saving( reduced down-time) 11. Self cleaning effect. Short Installation length accessible (G16). Individual adaptation is subject to pump's design and style. Customized products(OEMs) are available. Conditions and Operating range L 1. Pressure: 0.1-2.5MPa 2. Temperature: -30~ 200° C 3. Shaft diameter: 14 to 200 mm 4. Sliding velocity: vg≤20m/s 5. Applicable medium: Clean water, sewage water, oil, acid, alkali, salt, corrosive solution, etc. Material Metal parts: Metal 316, 304, 2Cr13, Waveform Spring Friction Elements: Silicon carbide or hard alloy, Carbon, TC Auxiliary seal: Rubber O-ring or PTFE Seat Types: G9, G16