Durable Sterling 290BS Pump Seal for Reliable Performance

• Customization: Available
• Structure: Single End
• Pressure: High Pressure Mechanical Seals
• Model NO.: QT-290BS
• Speed: General Speed Mechanical Seal
• Temperature: Temperature Mechanical Seal
• Performance: Wear
• Standard: Standard
• Type: Qt-290BS
• Balance: Balanced
• Brand: Queeny Tech
• Delivery Time: Stock
• Price: Lower Than Original
• Quality: 12 Month Guarantee
• Transport Package: Customized
• Specification: Standard
• Trademark: Queeny
• Origin: China
• HS Code: 8484200090
• Production Capacity: 5000
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Parameter	Value/Description	Unit/Note
Model	QT-290BS	Single-spring, balanced mechanical seal with PTFE bellows
Seal Type	PTFE Bellows Driven, Balanced Design	Eliminates metal-to-fluid contact for high corrosion resistance
Face Materials	- Rotating: Silicon Carbide (SiC) - Stationary: Carbon Graphite Impregnated with PTFE	SiC for wear resistance; graphite for low friction in corrosive media
Housing Material	Stainless Steel 316L	Corrosion-resistant outer structure
Pressure Range	0 - 1.0	MPa	Suitable for low-to-medium pressure chemical pumps
Shaft Diameter Range	25 mm - 60 mm	Fits standard shafts in chemical and pharmaceutical equipment
Maximum Rotational Speed	3000	RPM	Stable performance at moderate speeds
Temperature Range	-30°C ~ 180°C	PTFE bellows maintain flexibility in wide thermal range
Leakage Rate	≤1.5	ml/h	Meets ISO 21049 standards for low-leakage applications
Installation Type	External-Mounted (Non-Intrusive to Pump Housing)	Simplifies replacement without disassembling the pump
Seal Structure	Single-End Face with Anti-Rotation Pin	Ensures precise alignment during operation
Standards Compliance	ISO 21049, CE (Machinery Directive)	Certified for industrial use in corrosive environments
Key Features	- Full PTFE Wetted Parts - Self-Compensating for Shaft Movement - Corrosion-Free Design	Eliminates risk of metal corrosion in aggressive media

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.