Single End Qt 491 Standard Mechanical Seal

• Customization: Available
• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Model NO.: QT 491
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Type: HU1
• Balance: Unbalanced
• Brand: Queeny
• Price: Lower Than Original
• Delivery Time: Stock
• Quality: 12 Month Guarantee
• Transport Package: Standard
• Specification: 16MM-110MM
• Trademark: Queeny
• Origin: Shanghai, China
• HS Code: 8484200090
• Production Capacity: 20000
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Parameter Category	Specific Parameter	Detailed Description
Basic Information
Seal Type	QT 491 Mechanical Seal	A high - performance mechanical seal designed for diverse industrial pumping systems, providing reliable sealing solutions.
Model	QT 491	Engineered to meet the demanding requirements of various operating conditions.
Materials
- Rotating Ring	Tungsten Carbide	The rotating ring made of tungsten carbide offers outstanding hardness and wear resistance, ensuring long - term durability under high - speed and high - pressure operations.
- Stationary Ring	Carbon Graphite	The carbon graphite stationary ring provides excellent self - lubricating properties and good chemical resistance, reducing friction and enhancing sealing efficiency.
- O - Ring	Fluoroelastomer (FKM)	The FKM O - ring ensures a tight seal and is resistant to a wide range of chemicals and temperatures, maintaining reliable performance in different media.
Size Specifications
Shaft Diameter Range	20 - 45 mm	Suitable for pump shafts within this diameter range, offering versatility for different pump models.
Seal Chamber Inner Diameter	30 - 55 mm	Designed to fit into seal chambers with inner diameters in this range for proper installation and optimal sealing performance.
Seal Width	8.5 mm	The 8.5 mm seal width is optimized to balance effective sealing and minimize energy loss due to friction.
Performance Parameters
Working Pressure	Maximum 1.5 MPa	Under normal operating conditions, the seal can withstand a maximum pressure of 1.5 MPa, preventing leakage of the pumped fluid.
Working Temperature	- 20ºC - 130ºC	Capable of operating effectively within this temperature range, suitable for both cold - and high - temperature applications.
Linear Velocity	Maximum 10 m/s	The seal can handle a maximum linear velocity of 10 m/s, ensuring stable performance during high - speed pump operation.
Applicable Media
- Water - based Fluids	Compatible with clean water, industrial wastewater, and water - based solutions with a pH range of 3 - 11.
- Oil - based Fluids	Suitable for common lubricating oils, hydraulic oils, and some light hydrocarbon oils.
- Chemical Solutions	Resistant to many common chemical substances, such as weak acids, alkalis, and some organic solvents.
Installation and Maintenance
Installation Method	Axial Installation	Installed axially onto the pump shaft following a standardized installation procedure to ensure correct alignment and sealing.
Installation Torque	13 - 17 N·m	During installation, a torque within this range should be applied to secure the seal without causing damage to its components.
Maintenance Cycle	Every 3500 operating hours	Regular maintenance is recommended every 3500 operating hours, including inspection for wear, leakage, and proper alignment.
Storage Conditions	Store in a dry, cool place at a temperature between 5ºC - 25ºC, away from direct sunlight and corrosive gases.	Proper storage helps maintain the integrity of the seal components and extends their shelf life.
Quality and Certification
Service Life	Approximately 1.8 - 2.8 years under normal operating conditions	With proper operation and maintenance, the QT 491 seal can provide reliable service for 1.8 - 2.8 years.
Leakage Rate	≤0.09 mL/h	The seal is designed to have a low leakage rate, ensuring the safety and efficiency of the pumping system.
Certification Standards	ISO 9001, ISO 14001	Meets the requirements of ISO 9001 quality management system standards and ISO 14001 environmental management system standards.
Other Characteristics
Vibration Resistance	Can withstand vibrations with a frequency range of 5 - 45 Hz and an amplitude of 0.45 mm.	Engineered to maintain sealing performance in environments with moderate vibrations.
Self - lubricating Property	The seal surfaces have self - lubricating characteristics, reducing friction and wear during operation.	This feature helps to extend the service life of the seal and improve the overall efficiency of the pumping system.

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.