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| Quantity (pieces) | 1 - 10 | > 10 |
| Lead time (days) | 15 | To be negotiated |
Product Description
Size | Custom |
Place of Origin | Zhejiang, China |
Brand Name | CFH74D/M74D/H74N |
| Supply Ability | 10000 Piece/Pieces per Month |
1) Heat shock stablity
2) chemical corrosion-resistant
3) High temper-endure(up to 1650°)
4) Wearing/corrosion/oxidation resistant
5) Highly performance of mechanical strength
6) Cleaning or etching the hardest sub-surfaces
7) Used for grinding, lapping, and wire saw cutting as well as abrasive blasting
Material And Component Codes
Description | Material | Material Feature & Suitable Scope |
| Rotary /Stationary Face | Carbon | Resistant against: erosive heat. suitable for water and oil medium. |
| Ceramic | Resistant against:shore hardness,abrasion. Suitable for dusted water and oil. | |
| Silicon Carbide | Resistant against:heat,abrasion,erosive. Suitable for industrial pumps, submersible pump sewage pump etc | |
| Tungsten carbide | Resistant against:heat,abrasion,erosive. Suitable for industrial pumps, submersible pump sewage pump etc | |
| Bellow Cup gasket Oring | NBR | Resistant against:pressure,abrasion,high elasticity and mechanical strength. Suitable for water and Oil Under -20°C-120°C |
| EPDM | Resistant against:heat freeze,chemical reagent depending. Suitable for water and Oil Under -40°C-150°C | |
| MVQ | Resistant against:heat, oil, reagent, medicine, acetone.Suitable for high temperature. Hydraulic equipment and vacum equipment Suitable for erosive medium under -20°C-180°C | |
| ECO | Resistant against:ozone aging merely ocetum, ammomia ethanol. Suitable for medium -40°C-150°C | |
SUS304 SUS316 | Resistant against: freon, rock oil. Suitable for medium -30°C-130°C | |
Retainer driver ring\spring Spring seat | SUS304 SUS316 | Resistant against: abrasion, antirust of feature |
Let me Help you find it what mechanical seal do you want
The First step: Do you know Type name? you can choose from the list below.
The Second Step: Do you know what material do you want? Choose from the list below.
The Third step: Do you know what shaft size?
If you don’t know any, please do not hesitate to ask us, we will help you to find out the best way.
Why Choose Us
The Type H74D/M74D/H74N Pump Mechanical Seal Parts are engineered to provide reliable sealing performance in water pumps across various industries, including municipal water supply, wastewater treatment, and industrial cooling systems. These Pump Mechanical Seal Parts are designed for durability, leak-free operation, and easy maintenance, making them ideal for both clean and abrasive water applications.
✔ Leak-Free Performance – Precision-engineered faces ensure minimal fluid loss
✔ Corrosion & Abrasion Resistance – Premium materials for long service life
✔ Easy Replacement – Compatible with standard pump models
✔ Customizable Configurations – Multiple material options for different water conditions
The Pump Mechanical Seal Parts are available in various material combinations:
Seal Faces:
• Silicon carbide (SiC) – For abrasive water and slurry applications
• Tungsten carbide (WC) – High-pressure water pumps
• Carbon graphite – Non-lubricating services
Elastomers:
• EPDM – Standard water and mild chemical resistance
• FKM – Enhanced durability for aggressive water conditions
• Nitrile (NBR) – Cost-effective for general-purpose water pumps
Metal Components:
• 304/316 stainless steel – Corrosion-resistant for freshwater applications
• Super duplex steel – For seawater and high-chloride environments
✔ CNC Machining – Ensures dimensional accuracy (±0.01mm)
✔ Lapping & Polishing – Achieves ultra-smooth seal faces (Ra < 0.2μm)
✔ Quality Testing – Each Pump Mechanical Seal Part undergoes pressure and leakage tests
Clean water distribution pumps
High-pressure booster stations
Sewage pumps handling abrasive solids
Sludge transfer applications
Cooling tower circulation pumps
Heat exchanger feed pumps
Seawater intake pumps
Reverse osmosis (RO) high-pressure systems
Pre-Installation Checks
Inspect shaft and seal chamber for wear or damage
Ensure proper shaft runout (≤0.05mm)
Seal Assembly
Lubricate O-rings with water-compatible grease
Align seal faces carefully to avoid misalignment
Post-Installation Verification
Perform a dry rotation test
Monitor initial operation for leaks or overheating
| Issue | Possible Cause | Solution |
|---|---|---|
| Excessive Leakage | Worn seal faces, damaged O-rings | Replace Pump Mechanical Seal Parts |
| Overheating | Dry running, insufficient lubrication | Check water flow and flush system |
| Premature Wear | Abrasive particles in water | Upgrade to SiC/SiC faces |
Maintenance Tips:
✔ Monthly inspections for leaks and wear
✔ Annual seal replacement in high-wear applications
✔ Flush system checks for pumps handling dirty water
Compatibility – Fits most standard water pump models
Cost-Effective – Reduces downtime and repair costs
Reliable Performance – Engineered for long service life
Final Recommendation:
For water pumps requiring high-performance sealing, the Type H74D/M74D/H74N Pump Mechanical Seal Parts provide a dependable and efficient solution.
Contact us today for expert guidance on seal selection!
12 Common Technical Q&As About Type H74D/M74D/H74N Pump Mechanical Seal Parts
Q: What are the key differences between H74D, M74D and H74N Pump Mechanical Seal Parts?
A: The main distinctions are:
H74D: Standard duty for clean water applications
M74D: Medium duty for mildly abrasive water
H74N: Heavy duty for aggressive/slurry water services
All three types of Pump Mechanical Seal Parts share the same mounting dimensions but differ in material compositions.
2.Q: What materials are recommended for seawater applications?
A: For seawater pumps, we recommend Pump Mechanical Seal Parts with:
Seal faces: Silicon carbide vs silicon carbide
Metal components: Super duplex stainless steel
Elastomers: EPDM or FKM
This combination provides excellent corrosion resistance against chloride attack.
3.Q: How do I select the right Pump Mechanical Seal Parts for my water pump?
A: Selection requires:
Pump model and operating conditions
Water quality (clean, brackish or abrasive)
Shaft diameter and seal chamber dimensions
Temperature and pressure ranges
Our engineers can provide specific recommendations.
4.Q: What's the typical service life in municipal water applications?
A: In clean water service, properly installed Pump Mechanical Seal Parts typically achieve:
3-5 years for H74D models
2-3 years for M74D models
1-2 years for H74N models
Actual lifespan depends on water quality and maintenance practices.
5.Q: Can these Pump Mechanical Seal Parts handle sandy water conditions?
A: Yes, when configured with:
Hard-faced silicon carbide seal faces
Abrasion-resistant metal components
Proper flush systems
They can handle sand concentrations up to 5% by weight.
6.Q: What maintenance is required for these seals?
A: Pump Mechanical Seal Parts require:
Monthly visual inspections
Quarterly lubrication checks
Annual seal face examinations
Immediate replacement when leakage exceeds 10 ml/hr
7.Q: How do I troubleshoot premature seal failure?
A: For early failures:
Check for shaft misalignment (>0.05mm)
Inspect water quality for abrasives
Verify proper installation
Examine seal faces for unusual wear patterns
8.Q: Are special tools required for installation?
A: Basic tools needed for Pump Mechanical Seal Parts installation:
Micrometer for shaft measurement
Alignment gauge
Torque wrench
Seal face cleaning materials
9.Q: Can these seals handle frequent dry running?
A: While Pump Mechanical Seal Parts are durable, prolonged dry running (>5 minutes) will damage:
Seal faces (cracking/scoring)
Elastomers (hardening/cracking)
Metal components (overheating)
Always ensure proper water supply before operation.
10.Q: What's the proper storage method for spare Pump Mechanical Seal Parts?
A: Store seals:
In original packaging
Away from direct sunlight
In climate-controlled environments
With annual condition checks
11.Q: Are these Pump Mechanical Seal Parts compatible with all water pump brands?
A: Our seals are designed to fit:
85% of standard water pump models
Most ANSI/ISO compliant pumps
Custom adapters available for special cases
Always verify dimensions before ordering.
12.Q: What ROI can I expect when using genuine Pump Mechanical Seal Parts?
A: Documented benefits include:
30% longer service life vs generic seals
40% reduction in maintenance time
Payback period of 6-12 months
For a customized analysis, provide your current seal performance data.
Key Technical Takeaways:
Proper material selection is critical for water quality compatibility
Correct installation extends Pump Mechanical Seal Parts lifespan
Regular maintenance prevents unexpected failures
Genuine parts provide better ROI despite higher initial cost
Pro Tip: Always keep a spare set of Pump Mechanical Seal Parts for critical water pumps to minimize downtime during replacements. Our rapid delivery service ensures parts availability when you need them most.
Support Services Available:
Technical consultation
Failure analysis
Onsite training
Custom engineering solutions
For application-specific recommendations, consult our sealing specialists with your pump parameters and water analysis data. We provide complete lifecycle support for your water pump sealing needs.
