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Single Waveform Spring Mechanical Seal

Price:	US $ 75-165/Set
Trade Terms:	FOB,CFR,CIF
Min Order:	10/Piece
Pay Type:	L/C,T/T,D/P

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Showroom Product Company Profile

QHH7N Mechanical seal
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 type:
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. Flexibility in torque transmissions
6. Bilateral rotation: alternative rotation direction; easy install and uninstall
7. Clean assembly
8. Long product lifecycle
9. Installation faults were avoided, damage- free and cost-effective.
10. Straightforward and easier specification for pre-assembly unit
11. Time saving( reduced down-time)
12. Self cleaning effect
13. Short Installation length possible (G16)
14. Individual adaptation is subject to pump's design and style.
15. 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

Materials:
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
1.5477Spring
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"))
Pressure:
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
URL: hzqhsy.en.made-in-china.com/ or www.qhseals.com

Prod Model:	H7N Mechanical Seal (BURGMANN)
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Style:	Single- Spring Mechanical Seal
Materials:	Metal, Silicon Carbide, Hard Alloy
Materials 2:	Waveform Spring
Function:	Rotary Sealing, Shaft Seals
Industrial Applications1:	Pumps Seals for Chemical, Oil
Applications 2:	Pumps Seals for Water, Sewage Proposal
Standard:	Standard
Performance:	Single Waveform Spring Compensation Function
Type:	Qhh7n

Company Profile

Hangzhou Qinghua Industrial Co., Ltd. is a modernized manufacturer. Founded in 2006, her total assets raised up to 60million RMB, including 5.88million RMB of the registered capital. It covers an area of 12, 000 SQMs. The organization possesses standard modernized factory, science& research center, company building, which include 10, 000 SQMs areas totally, and an excellent technical group.

Qinghua has cultivated the image of a high-tech organization, Which is in combination of designing and manufacturing mechanical seals, an emerging industry in China, vending and offering after-service as well as integrating product's research. Through more than 100 staffs' hardworking, the company has got great achievement, manufacturing 50, 000 units annually. The yearly sales' amount is about 5 million USD, demonstrating Qinghua's worldwide offers and services to Asia, Europe, Africa, America, and the rest of world.

A strong research team, which consist of 3 professionals, 12senior engineers and engineers and 40 technicians in our company, helps us to aim at " Quality-oriented, Scientific management, Customer satisfaction, Creativeness". Thanks to their efforts, we have achieved 8 inventions and utility model patents, qualified by State Intellectual Property Bureau, for example Desulphurization Main Circulating Pump mechanical seals, High Speed Boiler (feed water) Pump mechanical seals, etc.

Following the successful partnership with Kingda Pump Industry Group and its research center, organization has established perfect quality control system, which is qualified to ISO9001: 2008 quality certification. Meanwhile, the cooperation in science and technology with Dynamical System Institute, Dalian University of Technology, was great significant for them to be entitled to China's National Industrial Production Licences by General Administration of Quality Supervision, Inspection and Quarantine(AQSIQ) of China, ensuring product quality, which was increasingly upgraded from then on. As a result, they got good recognition in the industry.

In recent years, our business scaled up investment drive as well as production campaign. We bought in Japanese MAZAK NC Lathe with full function and AUTO practice, 4meters double column vertical lathe, 1.8m CNC boring machines in our CNC processing center. As for product quality control, we strengthened quality management, upgraded low, medium, high speed test equipment, created ultrahigh speed test unit, running on a high level.

Networking and activities play a vital role in our company. As a member of China's General Mechanical Pump Association, China's Hydraulics(or pneumatics) and seal Industry Association, and China's Iron and Steel Association, we took part in many business activities to exchange and cooperate with customers. We are qualified supplier for Guodian company and Huadian company, two China's electricity giants.

We have been supplying air separation plants' units for Hangyang Group, supporting mechanical seals for Shengu Group, including petrochemical pumps, high pressure boiler(feed) pumps for several years. We also provided services for Kingda Pump Industry Group Co., Ltd., for example, mechanical seals for desulphurization pump, slurry pump, dredging pump, clean water pump and other machines' sealing units. What is more, mechanical seals for Xiangfan 525 Pump Industry Co., Ltd., Baogang group, Hengyi group, Tianmen pump company, Xiaoshan power plant.

Now we have developed a variety of mechanical seals for industrial purposes, involving pump seal, compressor seal, which allow widespread applications and comprehensive practices, ranging metallurgy, mine, petroleum, chemical, electric power, alumina, paper making, shipbuilding, coal chemical, sewage treatment, biological pharmaceutical industries. We provided premium quality equipment, spare parts, and other services to our customers, gained a good reputation from users.