Metal Bellows Seal Qt 680 Replace John Crane 680

• Customization: Available
• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Model NO.: QT-680
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Type: Qt-680
• Balance: Balanced
• Brand: Queeny
• Delivery Time: Stock
• Price: Lower Than Original
• Quality: 12 Month Guarantee
• Transport Package: Customized Package
• Specification: Standard
• Trademark: Queeny
• Origin: China
• HS Code: 84842000
• Production Capacity: 5000
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Parameter	Value
Model	QT-680
Size Range (mm)	15 - 150
Type	Single-Ended, Multi-Spring, Unbalanced
Material - Stationary Ring	Silicon Carbide
Material - Rotating Ring	Tungsten Carbide
Material - Gasket	PTFE
Material - Spring	Stainless Steel 316
Operating Pressure Range (MPa)	0 - 1.6
Maximum Operating Pressure (MPa)	1.6
Minimum Operating Pressure (MPa)	0
Operating Temperature Range (°C)	-40 - 200
Maximum Operating Temperature (°C)	200
Minimum Operating Temperature (°C)	-40
Maximum Rotational Speed (rpm)	3000
Shaft Diameter Range (mm)	15 - 150
Sealing Medium Compatibility	Water, Oil, Chemicals (Non - Corrosive to Materials Used)
Leakage Rate (ml/h)	≤ 5
Hardness of Stationary Ring (HV)	1200 - 1500
Hardness of Rotating Ring (HV)	1500 - 1800
Surface Roughness of Seal Faces (Ra, μm)	≤ 0.2
Spring Rate (N/mm)	8 - 12
Number of Springs	6
Axial Length (mm)	25 - 50 (depending on size)
Radial Thickness (mm)	10 - 20 (depending on size)
Weight (g)	100 - 500 (depending on size)
Storage Conditions	Dry, Clean Environment, Temperature 0 - 40°C, Humidity ≤ 60%
Installation Torque (N·m)	15 - 30 (depending on size)
Maintenance Interval	Recommended every 12 months or 8000 operating hours
Life Expectancy (operating hours)	8000 - 12000
Dynamic Friction Coefficient	0.05 - 0.1
Static Friction Coefficient	0.1 - 0.15
Vibration Resistance (m/s²)	≤ 10
Impact Resistance (J)	≥ 5
Pressure Holding Time (min)	≥ 30 at maximum operating pressure
Chemical Resistance - pH Range	4 - 10
Corrosion Rate in Water (mm/year)	≤ 0.01
Corrosion Rate in Oil (mm/year)	≤ 0.005

 

Queeny design engineers are able to produce a seals solution for the most basic applications,to those that are extremely complicated and unique. We are able to provide you these solutions supported by life test data and years of excellent field performance.As your partner, we provide sealing solutions for centrifugal pumps,agitators and other rotating equipment, and help you consolidate your brand and market position.

Mechanical sealing adopts the principle of mechanical friction sealing, which has excellent sealing performance, which can effectively prevent leakage and protect the safety of the environment and equipment. Compared with traditional packing seals and rotary seals, the sealing effect of mechanical seals is more reliable.

 

Our products are made of high quality materials and manufacturing processes, with a long service life and low cost of use. It can effectively reduce the maintenance costs and operating costs of equipment .

 

Our mechanical seals are designed to be easy to service and replace,simply by removing the sealing components and replacing the sealing surface and sealing ring. Compared with other sealing forms, our products are more convenient to repair and replace.

 

Mechanical seal is suitable for high temperature, low temperature, high pressure, vacuum and corrosive media and other complex environment, to ensure the stable operation of the equipment.

Shanghai Queeny Mechanical Equipment Co.,Ltd.is an enterprise specializing in the R&D,manufacture and export of mechanical seal products,headquartered in Pudong New Area,Shanghai.Our products mainly include component seals,dry gas seals,metal bellows seals,mixer and agitator seals,single & dual cartridge seals,silicon carbide parts and tungsetn carbide parts,which can replace John Crane, Burg-mann, AES, Chesterton,Flowserve,Rotenand other similar products,they are widely used in water treatment,petroleum,chemical,food,medical and other industries.
Relying on first-class technology and professional services,since its establishment, Queeny has carried out in-depth cooperation with hundreds of companies in more than 70 countries around the world.Our products are exported to Asia,Europe,North America,South America,Oceania and Africa in large quantities every year,and have been widely praised.Super high cost performance is the basis of our long-term cooperation with customers.We always rigorously treat clients' requirements,strictly control the production process,and comprehensively monitor the export procedure.It is our mission to reduce production and operation costs for more enterprises all over the world.

Q1: Are you a trading company or a factory?
We are a factory, so we can offer you factory prices with high quality.

Q2: Can I get samples?
Yes. You can ask for samples. Usually it's free, but you need to pay for shipping.

Q3: Can l use my own logo or design on the goods?
Yes, we provide OEM/ODMservices; your logo and design can be printed on the products.

Q4: What are your payment terms?
We accept T/T, Paypal, Western Union, and credit card payment is also welcome.

Q5: How about the delivery time?
For stock items, we can ship immediately after receiving the payment.
For other products, we need 14-25 days for mass production, which depends on the quantity and type of order.

Q6: How can we ensure the quality?
Pre-production samples are required before mass production;Final inspection is required before shipment;

Q7: 1 can't find our products in your catalog, can you customize the products for us?
Yes, customized products are available, OEM is welcome.

Q8: Can l buy pumps or pump parts from your company?
Yes, we also provide pumps and pump parts.