Advanced Qt-Type-21 Mechanical Pump Seal for Industrial Use

• Customization: Available
• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Model NO.: QT-Type 21
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Qt-Type 21
• Type: HU1
• Balance: Unbalanced
• Brand: Queeny
• Delivery Time: Stock
• Price: Lower Than Original
• Quality: 12 Month Guanartee
• Transport Package: Customized Package
• Specification: standard
• Trademark: QT
• Origin: China
• HS Code: 84842000
• Production Capacity: 10000

Product Description

Parameter	Specification
Model	QT-Type 21 (General-Purpose Balanced Seal)
Type	Single Seal, Balanced Design (Pusher Type)
Spring Configuration	Multiple Coil Springs (Even Load Distribution)
Material Composition	- Rotating Ring: Silicon Carbide (SiC) - Stationary Ring: Carbon Graphite - Metal Parts: SS304/SS316 - Elastomer: FKM (Standard), EPDM, NBR
Temperature Range	- Standard: -20°C to +180°C - High-Temp Option: Up to +250°C (Special Elastomers)
Pressure Range	≤ 2.5 MPa (25 bar)
Shaft Diameter	25-80 mm (Standard)	Custom Sizes: 20-100 mm Available
Speed	Max. 20 m/s (≈ 5000 RPM)
Leakage Rate	≤ 5 mL/hr (ISO 21049 Compliant)
Surface Finish	Seal Faces: Ra ≤ 0.1 μm (Mirror Polished)
Applications	- Chemical Process Pumps - Refinery Pumps - Water Treatment
Media Compatibility	Water, Oils, Mild Acids/Alkalis (pH 4-10), Light Hydrocarbons
Standards	ISO 21049, EN 12756, ANSI/B73.1
Certifications	RoHS, REACH (FDA-Compliant Options Available)

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, 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.