Durable Qt-Mfl85n Mechanical Seal for High-Performance Pumps

• Customization: Available
• Structure: Single End
• Pressure: High Pressure Mechanical Seals
• Model NO.: QT-MFL85N
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Type: HU1
• Balance: Balanced
• Warranty: 12 Months
• Feild: Mission Pump/Slurry Mud Pump
• Delivery: Stock
• Materials: 316/Hast-C/Inconel 718
• Transport Package: Customized
• 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 Category	Specific Parameter	Detailed Description
Basic Information
Seal Type	QT-MFL85N Mechanical Seal	A high - performance mechanical seal designed for industrial pumps, ensuring reliable sealing under diverse operating conditions.
Brand	[Brand Name]
Model	QT-MFL85N	Specifically engineered to meet the sealing requirements of various fluid handling systems.
Materials
- Rotating Ring	Silicon Carbide (SiC)	Offers excellent hardness and wear resistance, enabling the seal to withstand high - speed and high - pressure operations, and extending its service life.
- Stationary Ring	Tungsten Carbide	Provides a smooth and durable surface for efficient sealing, with good resistance to corrosion and abrasion.
- O - Ring	Fluoroelastomer (FKM)	Ensures a tight seal and is resistant to a wide range of chemicals and temperatures, maintaining sealing integrity in different media.
Size Specifications
Shaft Diameter Range	30 - 60 mm	Can be installed on pump shafts with diameters within this range, suitable for various pump models.
Seal Chamber Inner Diameter	40 - 70 mm	Designed to fit seal chambers with inner diameters in this dimension, ensuring proper installation and operation.
Seal Width	9 mm	The 9 - mm width is optimized to balance effective sealing and minimize friction between the seal components.
Performance Parameters
Working Pressure	Maximum 2.0 MPa	Under normal working conditions, the seal can withstand a maximum pressure of 2.0 MPa to prevent leakage of the pumped fluid.
Working Temperature	-25ºC - 180ºC	Capable of operating effectively within this wide temperature range, suitable for both cold - storage and high - temperature industrial applications.
Linear Velocity	Maximum 12 m/s	Allows the seal to function stably even at relatively high rotational speeds of the pump shaft.
Applicable Media
- Water - based Fluids	Suitable for clean water, cooling water, and various water - based chemical solutions with a pH range of 2 - 13.
- Oil - based Fluids	Compatible with lubricating oils, hydraulic oils, and some organic solvents.
- Chemical Fluids	Resistant to mild acids, alkalis, and certain non - aggressive chemical substances.
Installation and Maintenance
Installation Method	Axial Installation	Installed axially onto the pump shaft following a precise installation procedure to ensure correct alignment and a secure seal.
Installation Torque	18 - 22 N·m	Apply a torque within this range during installation to firmly secure the seal without causing damage to its components.
Maintenance Cycle	Every 4000 operating hours	Regular maintenance, including inspection for wear, leakage, and alignment, is recommended every 4000 hours of operation.
Storage Conditions	Store in a dry, dark place at a temperature between 5ºC - 25ºC, away from corrosive gases.	Proper storage helps preserve the material properties and sealing performance of the seal.
Quality and Certification
Service Life	Approximately 2 - 3.5 years under normal operating conditions	With proper operation and maintenance, the QT-MFL85N seal can provide reliable service for 2 to 3.5 years.
Leakage Rate	≤0.05 mL/h	Engineered to have an extremely low leakage rate, ensuring the containment of the pumped fluid within the system.
Certification Standards	ISO 9001, ISO 14001, and relevant industry standards	Meets international quality management and environmental management system standards, ensuring product quality and environmental compliance.
Other Characteristics
Vibration Resistance	Can withstand vibrations with a frequency range of 8 - 60 Hz and an amplitude of 0.6 mm.	Maintains sealing performance even in environments with significant vibration, common in industrial settings.
Self - lubricating Property	The seal surfaces are treated with a self - lubricating coating, reducing friction and wear, and enhancing the overall efficiency of the seal.

Queeny Mechanical Equipment Co., Ltd. is an advanced fluid seal design and manufacturer. Our factory is located in Ningbo, Zhejiang, China. and our sales organization is located in Shanghai. We not only provide customers with products, but also provide customers with overall solutions including services to cope with the complex and challenging working conditions encountered by customers.

The main products we produce are: Component Seals, Dry Gas Seals, Mixer and Agitator Seals, Cartridge Seals, Metal Bellows Seals and Silicon Carbide products. Products are widely used in chemical, textile, food, pharmaceutical, metallurgy, printing and other mechanical equipment fields, and can undertake the design of non-standard and special seals. 


In order to ensure the quality of mechanical seal products, the company has introduced advanced production equipment and testing equipment, implemented IS09001 quality system management, and improved its competitiveness in the market. The products we produce are sold all over the world and have won the trust of many customers. The trust of customers is our continuous development motivation.

Recommend applications

For use in pumps, mixers, blenders, agitators,refrigeration compressors, blowers, fans and other rotary shaft equipment.

For pulp and paper, petrochemical, food processing,wastewater treatment, chemical processing, power generation and other demanding applications.

 

Operating limits

Temperature:

 -40°C to 205°C/-40°C to 400°C

(depending on materials used)

Pressure:

≤2.8M Pa