Armstrong Pump Seal, Queeny Mechanical Seal Type-St

• Customization: Available
• Structure: Single End
• Pressure: Medium Pressure Mechanical Seals
• Model NO.: QT-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
• Eagle Bugman: Eagle Bugman 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

Product Description

Parameter	Value/Description	Unit/Note
Model	QT-ST	Single-spring, unbalanced mechanical seal for general use
Seal Type	Spring-Loaded Pusher Seal	Simple design for cost-effective sealing
Face Materials	- Rotating: Carbon Graphite - Stationary: Silicon Carbide (SiC)	Graphite for self-lubrication; SiC for wear resistance
Housing Material	Stainless Steel 304 / Cast Iron	Cast iron for economy; SS304 for corrosion resistance
Pressure Range	0 - 1.0	MPa	Suitable for water, oil, and non-corrosive fluids
Shaft Diameter Range	15 mm - 60 mm	Fits standard pump shafts in workshops and factories
Maximum Rotational Speed	3000	RPM	Matches common motor speeds in industrial settings
Temperature Range	-20°C ~ 120°C	Elastomer: NBR (standard); FKM optional for higher temps
Leakage Rate	≤5.0	ml/h	Complies with ISO 21049 for non-critical applications
Media Compatibility	Water, Lubricating Oils, Emulsions, Food-Grade Fluids	compliant options available for food industry
Installation Type	Press-Fit with Keyed Alignment	Tool-free installation for quick replacement
Elastomer Material	NBR (Standard); Fluorinated Rubber (Optional)	Upgrade to fluorinated rubber for chemical resistance
Standards Compliance	ISO 21049, CE (General Industry Certification)	Meets basic safety and performance requirements
Key Features	- Single Spring Design for Uniform Pressure - Anti-Rotation Pin - Cost-Effective Maintenance Kits	Reduces downtime in routine industrial operations

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.