Advanced Qt St Pump Seal: Reliable Mechanical Seal Solutions

• Customization: Available
• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Model NO.: ST
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Corrosion
• Standard: Standard
• Type: HU1
• Balance: Unbalanced
• Delivery: in Stock
• Water Pump: Water Pump Seal
• Mud Pump: Mud Pump Seal
• Flowserve Type RO: John Crane St
• Armstrong Pump: Armstrong Pump Seal
• Transport Package: Customized Package
• Specification: standard
• Trademark: QT
• Origin: China
• HS Code: 84842000
• Production Capacity: 10000
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Parameter	Specification
Model Number	QT-ST
Type	Single Spring / Balanced / Non-Pusher Type
Material Options
- Seal Face	Carbon (Rotary) vs. Tungsten Carbide (Stationary)
- Secondary Seals	Ethylene Propylene (EPDM), Hydrogenated Nitrile (HNBR)
- Metal Parts	Stainless Steel (SS304/SS316)
Operating Limits
- Pressure	0~1.5 MPa (217 psi)
- Temperature	-30°C to +220°C (-22°F to +428°F)
- Speed	≤25 m/s (≈82 ft/s)
Shaft Diameter	15~150 mm (0.6~5.9 in) [Customizable]
Fluid Compatibility	Hot Water, Steam, Aggressive Chemicals
Standards	ISO 9001, API 682 (Type B)
Applications	Chemical Pumps, Reactors, High-Temperature Equipment

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.

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.



1. Are we a factory or a trading company?
We are a factory only producing mechanical seals and we have our own marketing department  and also home market. The main market is 50% in China and 50% in European countries where most pumps factories located, we mainly supply to pump factories.

2. What are the payment methods?
We accept T/T, Western Union, Paypal, Made in China as your convenience.

3. How long is the delivery time?
Products in stock will be shipped within 48 hours. Standard seal 1-2 weeks. Custom seals are 3-4 weeks.

4. Could you offer sample ?
Yes, the sample could be sent to you with freight charge paid at your destination.

5. About our packaging type?
We have 2 kinds of packaging, one is with our brand, another one is white blank . with enough quantity, we could use your own logo in the package after your logo authorization.

6.I can not find our products in your catalog ,can you make customized products for us ?
Yes ,Customized products is available . Also, We have been adding new seals, there are many types we have not added in here yet, please send us the pump type or seals international code, we could identify the seals you need.