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Home > Industrial Equipment & Components > Pump & Vacuum Equipment > Pump Parts > Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces thumbnail-3

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces thumbnail-4

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces thumbnail-5

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces photo-1

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces photo-2

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces photo-3

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces photo-4

Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal Rated for 25 Bar Pressure With Silicon Carbide Seal Faces photo-5

Product Spotlights

Shanghai Dongfang DFSS500-19N/4 mechanical seal rated for 25 Bar pressure with Silicon Carbide seal faces. High wear resistance, low friction, easy installation, customizable options. Suitable for centrifugal pumps in water, oil, chemical applications. Trusted manufacturer with global export experience.

Negotiable MOQ: 1 Piece (Price negotiable depending on order volume and customization)

Key Specifications

Get Latest Price

Type:

Other, Single Cartridge (optional)

Brand:

Shanghai Dongfang

Model:

DFSS500-19N/4

Contact Supplier Request Quote Chat Now

Jiangsu Manqi Machinery Co., Ltd.

1Yr

Payment & Shipping

Payment Methods:

Port of Shipment:

Shanghai

Delivery Detail:

Delivery time depends on order quantity.

Product Details
Company Profile
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Type Other, Single Cartridge (optional)

Brand Shanghai Dongfang

Model DFSS500-19N/4

Pressure Rating 25 Bar

Seal Face Material Silicon Carbide

Applicable Pump Type Centrifugal Pump (optional)

O-ring Material NBR/EPDM/Viton (optional)

Operating Temperature -20°C to +120°C (optional)

Shaft Diameter Customizable (available upon request)

Application Water, Oil, Chemical (optional)

As a leading manufacturer based in Suzhou, Jiangsu, China, Jiangsu Manqi Machinery Co., Ltd. has been dedicated to providing high-quality sealing solutions since 2017. With a modern factory spanning 10,000–30,000 square meters and a skilled team of 11–50 employees, we specialize in producing reliable mechanical seals for industrial pumps worldwide. Our Shanghai Dongfang DFSS500-19N/4 Pump Mechanical Seal is engineered to deliver exceptional performance under demanding conditions, rated for a pressure of 25 Bar and featuring premium Silicon Carbide seal faces for superior wear resistance and longevity. Whether you are in Eastern Europe, Southeast Asia, Africa, or South Asia, our products are designed to meet your critical application needs.

Key Features & Technical Specifications

High Pressure Rating: Designed to withstand up to 25 Bar (approx. 360 psi), making it suitable for heavy-duty pumping systems.
Silicon Carbide Seal Faces: Provide excellent hardness, thermal conductivity, and chemical resistance, minimizing wear and extending service life.
Robust Construction: Built with a sturdy metal housing and flexible elastomer components to handle vibration and misalignment.
Easy Installation: Cartridge-style design (optional) simplifies assembly and reduces the risk of installation errors.
Versatile Compatibility: Suitable for use in centrifugal pumps handling water, oils, mild chemicals, and other non-abrasive fluids.
Customizable Options: Available in various elastomer materials (NBR, EPDM, Viton) and shaft sizes to match specific pump requirements.

Parameter	Value
Model	DFSS500-19N/4
Maximum Operating Pressure	25 Bar
Seal Face Material	Silicon Carbide (SiC)
Temperature Range	-20°C to +120°C (depending on elastomer)
Shaft Diameter Range	Customizable (available upon request)
Elastomer Options	NBR, EPDM, Viton (optional)

Advantages & Customer Benefits

Reduced Downtime: The durable Silicon Carbide faces resist scratching and cracking, ensuring long-lasting performance even in abrasive or high-temperature fluids.
Energy Efficiency: Low friction design minimizes power loss, contributing to lower operational costs.
Reliable Sealing: Rated for 25 Bar, this seal provides a tight barrier against leakage, protecting both the pump and the environment.
Global Compatibility: Designed to fit many standard centrifugal pump models, with customization options for non-standard dimensions.
Easy Maintenance: The cartridge-style construction (optional) allows quick replacement without disassembling the pump, saving time and labor.

Trust & After-Sales Support

At Jiangsu Manqi Machinery Co., Ltd., we are committed to delivering quality and reliability. Our factory, located in the industrial hub of Suzhou, has been in operation since 2017, leveraging advanced manufacturing processes and strict quality control. With a team of 11–50 experienced professionals, we ensure that every mechanical seal meets rigorous standards before shipment. Our products are exported to Eastern Europe, Southeast Asia, Africa, and South Asia through the Port of Shanghai, and we have built a strong reputation for responsive customer service and technical support. Whether you need a standard seal or a custom solution, we are ready to assist. Contact us today to discuss your requirements and experience the durability and performance of our Shanghai Dongfang DFSS500-19N/4 seal.

Frequently Asked Questions (FAQ)

Q: What pump models is this seal compatible with?
A: The DFSS500-19N/4 is designed for centrifugal pumps, particularly those in the Shanghai Dongfang DFSS series. It can also be adapted to other brands with matching shaft dimensions and housing. Please provide your pump details for a compatibility check.
Q: Can I use this seal for high-temperature applications above 120°C?
A: The standard temperature range is -20°C to +120°C. For higher temperatures, we recommend upgrading the elastomer to Viton or special materials. Contact our technical team for customized solutions.
Q: What is the expected service life of this mechanical seal?
A: Service life depends on operating conditions such as pressure, temperature, fluid composition, and pump maintenance. Under normal conditions, the Silicon Carbide faces provide excellent wear resistance, often lasting 1–3 years or more. Regular inspection is advised.
Q: Is the seal supplied as a cartridge or component set?
A: We offer both cartridge-style (pre-assembled) and component sets. The cartridge version is recommended for easy installation. Please specify your preference when ordering.
Q: What elastomer materials are available?
A: Standard options include NBR (for oil and water), EPDM (for hot water and mild chemicals), and Viton (for aggressive chemicals and high temperature). Other materials are available upon request.
Q: Can you provide custom shaft sizes?
A: Yes, we can customize the seal to fit different shaft diameters. Please contact us with your shaft dimensions and pump specifications for a quotation.
Q: How is the seal packaged for export?
A: Each seal is individually wrapped in protective material and packed in sturdy cartons or wooden crates to prevent damage during transit. We ship from Port of Shanghai with reliable logistics partners.
Q: Do you offer technical support for installation?
A: Absolutely. Our team can provide installation guidelines, drawings, and troubleshooting advice. We also offer after-sales support to ensure optimal performance.