| Parameter |
Value |
Unit |
Application Notes |
| Model |
QT-Type 21 |
- |
General-purpose industrial seal |
| Seal Design |
Single Cartridge Mechanical Seal with Integral Spring |
- |
Self-aligning for misalignment tolerance |
| Primary Face Material |
Tungsten Carbide (Coated) |
- |
High wear resistance for abrasive media |
| Secondary Face Material |
Carbon with Resin Impregnation |
- |
Low friction for extended service life |
| Housing/Retainer Material |
Stainless Steel 316 SS (Passivated) |
- |
Corrosion resistance in chemical environments |
| Pressure Rating |
0 - 3.0 |
MPa |
Max. 3.5 MPa in short-term overload conditions |
| Temperature Capability |
-40°C to 260°C |
°C |
Withstands thermal shock in high-temperature fluids |
| Shaft Diameter Range |
25 mm - 90 mm |
mm |
Compatible with ISO metric shaft standards |
| Maximum Rotational Speed |
4500 |
RPM |
Suitable for high-speed pumps and mixers |
| Leakage Rate (Standard) |
≤ 1.5 |
ml/h |
Meets API 682 Level 1 leakage requirements |
| Hardness Profile |
Primary Face: ≥ 1500 HV / Secondary Face: ≥ 180 HB |
- |
Ensures face stability under high pressure |
| Media Compatibility |
Petroleum Products, Coolants, Aliphatic Solvents |
- |
Avoid direct contact with concentrated oxidizers |
| Installation Feature |
Pre-lubricated Assembly with Alignment Guide |
- |
Reduces installation time and error risk |
| Vibration Limit (10-2000 Hz) |
≤ 2.0 |
mm/s (RMS) |
Designed for stable operation in noisy environments |
| Compliance Standards |
API 682 (2014 Edition), ISO 15747, ASME B73.2 |
- |
Certified for global industrial applications |
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.
Audited Supplier 
){kind=link}