FEATURES 1. QHFS type mechanical seal is applicable to the boiler feed water pump. 2. Single seal 3. Balanced seal 4. Cartridge seal 5. Multiple springs rotating 6. O- ring as auxiliary sealing 7. A pair of friction's elements are carbon graphite and SSIC Advantages 1. Cartridge mechanical seals for standardization 2. High pressure operating conditions are agreeable. 3. Clean assembly 4. Long product lifecycle. Energy saving, environment protection 5. Installation faults are avoided, damage-free and cost-effective 6. Excellent compensation performance functioning equivalent, effective pressurization 7. Straightforward and easier specification for pre-assembled unit. Time saving (reduced down-times) 8. Cartridge module performs great functions, showing the cutting-edge technology. 9. High flexible, OEMs are available. 10. Wide applicable to program about conversion and retrofit Conditions and Operating range Conditions and Operating range 1. Pressure: ≤2.5MPa 2. Temperature:≤220° C 3. Shaft diameter: d1=135mm, d0=131mm 4. Rotation speed: n≤5000r/min 5. Applicable medium: feed water Metal parts: 316, 304, 2Cr13 Friction Elements: Silicon carbide and Graphite. SSiC and RBSiC. Auxiliary sealing: Rubber or PTFE Package: Poly bag, one carton to one set Mail box: charles.m@qhseals.com URL: hzqhsy.en.made-in-china.com/ or www.qhseals.com