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  • Sell Single Waveform Spring Mechanical Seal Qhh7n - China

    price: contact company for price


    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 type:

    a, Integrated pumping device available ( H7F, H75F)

    b, seat cooling available ( H75G115)


    1. Universal applications( normal mechanical seal)

    2. Excellent compensation functioning equivalent, effective


    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


    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.

    Recommended applications

    1. Chemical industry

    2. Special rotating equipment, mainly industrial process pumps

    3. Pharmaceutical industry

    4. Water treatment and sewage proposal

    5. Refining technology

    6. Power plant technology

    7. Petrochemical industry

    8. Pulp and paper industry

    9. Oil and gas industry

    10. Hot water applications

    11. Light hydrocarbons medium

    12. Boiler feed pumps


    Mteal parts: Stainless steel 316, 304, 2Cr13

    Friction components: Silicon carbide, hard alloy, carbon graphite

    Auxiliary seals: rubber( NBR, MVQ, FPM, FKM, EPM) or PTFE

    Tech specifications:

    1.1472Seal face

    1.2485Drive collar

    1.3474Thrust ring

    1.4412.1O- Ring


    1.6904Set screw

    2475Seat ( G9)

    3412.2O- Ring

    1) d1 > 100 mm: 2 mm X 30°

    2) d1 > 100 mm: 30°

    3) d1 > 100 mm: +0.1

    4) d1 > 100 mm: H7

    Conditions and Operating range

    Shaft diameter: D1 = 14. . . 100 mm ( 0.55" . . . 3.94" )

    ( Single spring: D1 = max. 100 mm ( 3.94" ) )


    P1 = 80 bar ( 1, 160 PSI) for d1 = 14. . . 100 mm,

    P1 = 25 bar ( 363 PSI) for d1 = 100. . . 200 mm,

    P1 = 16 bar ( 232 PSI) for d1 > 200 mm

    Temperature: T = - 50 ° C- 220 ° C ( - 58 ° F- 428 ° F)

    Sliding( linear) velocity: Vg = 25 m/ s ( 80.5ft/ s)

    Axial movement:

    D1 up to 22 mm: ± 1.0 mm

    D1 24 up to 58 mm: ± 1.5 mm

    D1 from 60 mm: ± 2.0 mm

    Package: Poly bag, one carton to one set Mail box:

    charles. m[ at] qhseals[ dot] com

    Company Contact:

    • Phone: 8657182237399

    • Address: Heshang Town Industrial Park, Xiaoshan District, H, Hangzhou, China

    • Email: Email

    Published date: September 6, 2015 -

    • Business Description: The organization have long been devoted to designing, developing,and

      manufacturing mechanical seals in one of China's modernized factory. We

      export mechanical seals and pumps through international market to other

      areas, countries and states, for example, cartridge seal, split seal,

      component seal, and brand new mechanical seal replacement.

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