Queeny Mechanical Seals and Pump Seals 59u - Affordable Stock Options

• Customization: Available
• Structure: Single End
• Pressure: ≤2.1MPa
• Model NO.: QT-59U
• Speed: ≤25m/S
• Temperature: -29ºC~+204ºC
• Performance: Wear
• Standard: Standard
• Type: Metal Bellow Seal
• Balance: Balanced
• Brand: Queeny
• Price: Lower Than Original
• Delivery Time: Stock
• Quality: 12 Month Guarantee
• Transport Package: Standard or Customised
• Specification: all sizes
• Trademark: Queeny
• Origin: Shanghai, China
• HS Code: 8484200090
• Production Capacity: 50, 000PCS/Year
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 1.000kg

Product Description

Parameter	Details
Model	QT-59U
Type	Multi - spring, balanced, double - faced mechanical seal
Size Range	15mm - 100mm (shaft diameter compatibility)
Operating Pressure	Max. 2.5 MPa (sealing pressure capacity)
Temperature Range	-40°C to 200°C (suitable working temperature span)
Rotational Speed	Max. 3000 RPM (maximum applicable rotational speed)
Shaft Material	Stainless Steel 316 (high corrosion resistance)
Face Material	Tungsten Carbide / Carbon Graphite (pairing for effective sealing)
Secondary Sealing Material	EPDM (ethylene propylene diene monomer), with excellent resistance to water, steam, and many chemicals.
Sealing Medium Compatibility	Compatible with a wide range of liquids, including water - based solutions, non - aggressive organic solvents, and some mild acids and alkalis. Not suitable for highly corrosive or abrasive media.
Installation Method	Axial installation, designed for easy integration into various pump and rotating equipment systems.
Lubrication Requirement	Self - lubricating during operation; however, initial priming with compatible fluid is recommended for optimal performance.
Leakage Rate	Conforms to API 682 standards, with a maximum allowable leakage rate of 5 drops per minute under normal operating conditions.
Axial Tolerance	±0.5mm (allowable deviation during installation for proper alignment)
Radial Tolerance	±0.2mm (permissible radial displacement without affecting sealing performance)
Vibration Resistance	Can withstand vibrations up to 7.1 mm/s RMS (root mean square) at operating speed.
Axial Spring Force	50 - 150 N (range of spring force to maintain proper face contact)
Life Expectancy	Under normal operating conditions, the expected service life is 8,000 - 12,000 hours.
Cleaning and Maintenance	Can be cleaned with non - abrasive solvents and mild detergents. Regular inspection of seal faces and secondary seals is recommended every 1,000 operating hours.
Storage Conditions	Store in a dry, cool environment away from direct sunlight. Temperature should be between 0°C - 30°C, and relative humidity should not exceed 60%.
Weight	Varies depending on size, approximately 0.5 kg for 15mm size and up to 3 kg for 100mm size.
Pressure Test	Hydrostatically tested at 1.5 times the maximum operating pressure for 10 minutes to ensure integrity.
Chemical Resistance	Offers good resistance to oxidation, ozone, and aging. Resistant to aliphatic hydrocarbons, alcohols, and ketones to a certain extent.
Assembly Tolerance	The overall assembly tolerance for the seal housing and mating components should be within ±0.1mm for proper fit.
Dynamic Friction Coefficient	The dynamic friction coefficient between the seal faces is approximately 0.1 - 0.3, ensuring smooth operation.
Static Friction Coefficient	The static friction coefficient between the seal faces is around 0.3 - 0.5, which helps in maintaining the seal during non - operating periods.

At Queeny, our talented design engineers bring to life innovative sealing solutions, tailored for everything from fundamental applications to those that are extraordinarily complex and bespoke. Our prowess is backed by life test data and a legacy of outstanding field performance. As your trusted partner, we offer comprehensive sealing solutions for centrifugal pumps, agitators, and various rotating equipment, empowering you to strengthen your brand and solidify your market stance.

Mechanical sealing technology harnesses the principle of mechanical friction, delivering exceptional sealing performance that effectively prevents leakage, thereby safeguarding the environment and equipment. When compared to traditional packing and rotary seals, mechanical seals stand out for their remarkable reliability and effectiveness.

Crafted from superior materials using state-of-the-art manufacturing processes, our products boast an extended lifecycle and cost-effective usage. They are ingeniously designed to slash maintenance and operating expenses, thereby optimizing your equipment's overall efficiency.

Our mechanical seals are ingeniously designed for seamless servicing and replacement. Simply remove the sealing components to replace the sealing surface and ring. Compared to alternative sealing forms, our products offer unparalleled convenience in both repair and replacement.

Our mechanical seals are engineered to withstand high temperatures, low temperatures, high pressures, vacuums, and corrosive media. They ensure the stable, unwavering operation of equipment across diverse and challenging environments.

Shanghai Queeny Mechanical Equipment Co., Ltd. stands as a beacon of expertise in the R&D, manufacture, and export of mechanical seal products. Based in the thriving Pudong New Area, Shanghai, we offer a vast array of products including component seals, dry gas seals, metal bellows seals, mixer and agitator seals, single & dual cartridge seals, along with silicon carbide and tungsten carbide parts. Our offerings are perfect replacements for renowned brands like John Crane, AES, Chesterton, Flowserve, Roten, and are extensively used in industries such as water treatment, petroleum, chemical, food, and medical sectors.
With a foundation built on cutting-edge technology and exemplary service, Queeny has forged deep-rooted collaborations with hundreds of companies across more than 70 countries since its inception. Our products, exported in vast quantities to Asia, Europe, North America, South America, Oceania, and Africa, have garnered widespread acclaim. The unbeatable cost performance of our products underpins our enduring partnerships with clients. We meticulously address client requirements, enforce strict production control, and ensure comprehensive oversight of export procedures. Our mission is to slash production and operational costs for enterprises globally.Q1: Are you a trading company or a factory?
We are a factory, which means we can deliver high-quality products at factory-direct prices just for you.

Q2: Can I get samples?
Absolutely. You can request samples, typically provided for free, though shipping costs are your responsibility.

Q3: Can I use my own logo or design on the goods?
Certainly, we offer OEM/ODM services, allowing your logo and design to be beautifully imprinted on our products.

Q4: What are your payment terms?
We accept T/T, PayPal, Western Union, and warmly welcome credit card payments.

Q5: How about the delivery time?
For items in stock, we can dispatch them immediately upon receiving your payment.
For other products, a production lead time of 14-25 days is required, contingent on order quantity and type.

Q6: How can we ensure the quality?
We require pre-production samples before mass production; a final inspection is mandatory before shipment.

Q7: I can't find our products in your catalog, can you customize the products for us?
Yes, we offer customized products, and warmly welcome your OEM requests.

Q8: Can I buy pumps or pump parts from your company?
Yes, we also supply pumps and their respective parts, ensuring a comprehensive service for your needs.