Contact Platform Support
Help CenterKQSN350-X27A/275 Cartridge Pump Mechanical Seal Assembly Pre-Set Easy Installation
Product Spotlights
Related Products
-
KQSN300-X13B/350 High Temperature Mechanical Seal Replacement Kit of Shanghai Kaiquan Pump Spare PartsNegotiableMOQ: 1 Piece -
KQDP50-20-28 Horizontal Pump Mechanical Seal Corrosion Proof Parts for Shanghai Kaiquan Pump AccessoriesNegotiableMOQ: 1 Piece
-
KQSN450-M9/615 Pump Mechanical Seal 304 Stainless Steel Standard Compliant for Centrifugal PumpsNegotiableMOQ: 1 Piece
-
KQDP25-2S*5 Small Centrifugal Pump Mechanical Seal Complete Spare Components Fit Kaiquan Water PumpNegotiableMOQ: 1 Piece
-
WQ2290-4112-250 Waste Water Pump Impeller Replacement Kit Fit Shanghai Kaiquan WQ Series PumpNegotiableMOQ: 1 Piece
Jiangsu Manqi Machinery Co., Ltd. is a specialized manufacturer based in Suzhou, China, with over 7 years of experience in producing high-quality mechanical seals for industrial pumps. Our KQSN350-X27A/275 Cartridge Pump Mechanical Seal Assembly is designed for operators who demand reliability, quick installation, and minimal downtime. This pre-set cartridge seal eliminates the need for field measurement and complex adjustments, making it an ideal replacement for KQSN350 series centrifugal pumps. Manufactured in our 10,000–30,000 sqm factory with strict quality control, this seal assembly ensures leak-free performance and extended service life even under demanding conditions.
The KQSN350-X27A/275 cartridge mechanical seal is a complete unit that includes the seal faces, secondary seals, spring, and gland – all pre-assembled and pre-set to the correct compression. This design saves significant installation time compared to conventional component seals and reduces the risk of human error. Suitable for pressures up to 25 bar and temperatures from -20°C to +200°C, it is built to handle water, wastewater, and various industrial fluids. The seal faces are available in carbon vs. silicon carbide or tungsten carbide combinations, with elastomers such as Viton, EPDM, or NBR to match your process requirements.
Key Features and Benefits:
Pre-Set Cartridge Design: No need to measure spring compression or align seal faces – simply slide onto the shaft and tighten.
Reduced Downtime: Installation typically takes less than 30 minutes, compared to 1–2 hours for conventional seals.
Improved Reliability: Eliminates common installation errors such as over-compression or misalignment, which cause premature failure.
Versatile Material Options: Choose from carbon, silicon carbide, tungsten carbide, and various elastomers (Viton, EPDM, NBR) to suit your fluid and temperature requirements.
Robust Construction: Heavy-duty stainless steel gland and spring components resist corrosion and fatigue.
Interchangeable: Compatible with KQSN350 pump models and can be adapted to other pump brands with same shaft dimensions.
Technical Specifications:
| Parameter | Value |
|---|---|
| Model | KQSN350-X27A/275 |
| Type | Cartridge Mechanical Seal |
| Max Operating Pressure | 2.5 MPa (25 bar) |
| Temperature Range | -20°C to +200°C (depending on elastomer) |
| Max Rotational Speed | 3600 RPM |
| Seal Face Material | Carbon / Silicon Carbide / Tungsten Carbide (optional) |
| Elastomer Options | Viton, EPDM, NBR, and more |
| Gland Material | Stainless Steel |
| Spring Type | Single Coil Spring (multi-spring optional) |
Detailed Product Advantages:
Easy Installation for Maintenance Teams: The pre-set cartridge design means your technicians can replace the seal without special tools or training. Simply remove the old seal, clean the shaft and stuffing box, then slide the new cartridge in place. Tighten the gland bolts evenly and you’re done.
Longer Service Life: By eliminating installation errors and providing balanced seal face loading, the KQSN350-X27A/275 delivers up to 30% longer life compared to non-cartridge alternatives in typical water and wastewater applications.
Cost-Effective: Although the initial cost may be slightly higher than component seals, the reduction in downtime, repair labor, and unplanned outages offers a lower total cost of ownership over the life of the equipment.
Customizable for Specific Fluids: We offer face material and elastomer combinations to handle abrasives, chemicals, high temperatures, or corrosive media. Contact our engineering team for custom solutions.
Trust, Reliability, and Global Reach:
Jiangsu Manqi Machinery Co., Ltd. has been serving clients in Eastern Europe, Southeast Asia, Africa, and South Asia since 2017. Our 11–50 dedicated employees work in a modern 10,000–30,000 sqm facility equipped with precision machining and testing equipment. Each mechanical seal undergoes rigorous quality checks including pressure testing and dimensional verification before shipping. With a port of Shanghai as our shipment hub, we ensure timely delivery worldwide. We are committed to providing reliable sealing solutions that keep your pumps running. Contact us today to learn more about the KQSN350-X27A/275 pre-set cartridge seal and experience the ease of installation that saves you time and money.
Frequently Asked Questions (FAQ)
Q: Can this seal be used on pumps other than KQSN350?
A: Yes, it is designed for KQSN350 series but can be adapted to other pump models with the same shaft diameter and stuffing box dimensions. Please provide your pump specifications for compatibility check.Q: What is the expected lifespan of this mechanical seal?
A: Lifespan depends on operating conditions such as fluid type, temperature, pressure, and presence of abrasives. In clean water applications, it typically lasts 1–3 years. Regular maintenance and proper installation extend life.Q: Is the seal pre-balanced?
A: Yes, the KQSN350-X27A/275 cartridge seal is hydraulically balanced to reduce heat generation and wear at medium to high pressures.Q: Do I need to adjust spring compression during installation?
A: No. The cartridge is pre-set at the factory to the correct compression. Simply install and tighten – no measurement or adjustment required.Q: What materials are available for the seal faces?
A: We offer carbon vs. silicon carbide (standard), carbon vs. tungsten carbide, or silicon carbide vs. silicon carbide. Choose based on fluid hardness and temperature.Q: Can I order different elastomers for chemical resistance?
A: Yes, we supply Viton, EPDM, NBR, and other elastomers upon request. Please specify the chemical composition of your fluid.Q: What is the delivery time for this product?
A: For standard configurations, delivery is typically 7–15 working days. Custom orders may take 20–30 days. We ship from Shanghai port.Q: Does the seal come with installation instructions?
A: Yes, each seal includes a detailed installation manual. Our technical support team is also available for remote guidance.
Send Inquiry to This Supplier
You May Also Like
-
200N135A Copper Alloy Pump Impeller Anti-Wear Replacement Parts of Shanghai Kaiquan Pump FittingsNegotiableMOQ: 1 Piece
-
WQ2520-1001-500T Pump Impeller for Wastewater Treatment, Cast Iron, 500mm, Solids HandlingNegotiableMOQ: 1 Piece
-
KQSN300-X9A/475 Centrifugal Pump Impeller Cast Components Supporting Shanghai Kaiquan Pump AccessoriesNegotiableMOQ: 1 Piece
-
KZA50-250 Stainless Steel Corrosion Resistant Shanghai Kaiquan Impeller Spare PartsNegotiableMOQ: 1 Piece
-
KQSN800-M20S/525 Shanghai Kaiquan Industrial Water Pump Parts Double Suction Pump Impeller Standard PartsNegotiableMOQ: 1 Piece
-
KQSN1000-M27/880 Stainless Steel Anti-Corrosion Impeller OEM Parts Matching Shanghai Kaiquan PumpNegotiableMOQ: 1 Piece
-
Shanghai Kaiquan Pump WQ2327-672-250 Submersible Pump Impeller Wear Resistant ComponentsNegotiableMOQ: 1 Piece
-
Shanghai Kaiquan KQSN500-M9/675 Split Case Pump Cast Impeller OEM Replacement ComponentNegotiableMOQ: 1 Piece
-
Shanghai Kaiquan WQ2445-612-250 Submersible Pump Cast Impeller Durable Spare PartsNegotiableMOQ: 1 Piece
-
SLOW500-860 Mechanical Seal High Pressure Seal Assembly Large Flow Liancheng PumpNegotiableMOQ: 1 Piece
