Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CF70

Supply Ability

Supply Ability

10000 Piece/Pieces per Month

Product Details

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

How to choose What you want

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.

Contact Us Now

Why Choose Us

Type 70 Shaft Mechanical Seal for Automotive Water Pumps: Precision Engineering for Optimal Performance

1. Introduction to Type 70 Shaft Mechanical Seal

The Type 70 Shaft Mechanical Seal is a high-performance sealing solution specifically engineered for automotive water pump applications. Designed to withstand the demanding conditions of modern engine cooling systems, this shaft mechanical seal ensures leak-free operation while providing exceptional durability and heat resistance. Unlike traditional lip seals, the Type 70 Shaft Mechanical Seal utilizes advanced face-sealing technology to prevent coolant leakage, reduce friction, and extend pump service life.

Key Advantages of Type 70 Shaft Mechanical Seal

✔ Zero-Leakage Performance – Precision-lapped sealing faces prevent coolant loss
✔ High-Temperature Resistance – Stable operation from -40°C to 180°C (-40°F to 356°F)
✔ Reduced Friction – Low-wear materials minimize power loss
✔ Extended Service Life – 2-3× longer lifespan than conventional seals
✔ OE-Quality Construction – Meets or exceeds OEM specifications

---

2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Automotive Applications

The Type 70 Shaft Mechanical Seal incorporates:

• Primary Seal Faces:
  • Silicon carbide (SiC) – For superior wear resistance
  • Carbon graphite – Excellent dry-running capability
  • Tungsten carbide (WC) – Extreme pressure applications

• Secondary Seals:
  • Viton (FKM) – High-temperature elastomer
  • EPDM – Standard coolant compatibility
  • HNBR – Enhanced chemical resistance

• Metal Components:
  • 304/316 stainless steel – Corrosion resistance
  • Chrome-plated steel – Improved wear surfaces

2.2 Precision Manufacturing Process

✔ CNC Machining – Tight tolerances (±0.005mm)
✔ Laser Surface Finishing – Ultra-smooth faces (Ra < 0.1μm)
✔ Dynamic Balancing – Vibration-free operation at high RPM
✔ 100% Leak Testing – Ensures zero-defect quality

---

3. Applications of Type 70 Shaft Mechanical Seal

3.1 Automotive Water Pumps

• Passenger vehicle cooling systems

• Heavy-duty truck engines

• Performance and racing applications

3.2 Industrial Cooling Systems

• Generator set water pumps

• Marine engine cooling

• Agricultural equipment

3.3 Specialty Vehicles

• Electric vehicle battery cooling

• Hybrid powertrain systems

• Off-road and construction equipment

---

4. Installation & Maintenance Best Practices

4.1 Proper Installation Guidelines

1. Pre-Installation Checks

• Inspect shaft for wear or damage (max runout 0.05mm)

• Verify seal housing is clean and free of debris

2. Seal Installation

• Lubricate seal lips with coolant or silicone grease

• Use proper installation tools to prevent damage

• Ensure correct orientation of seal components

3. Post-Installation Verification

• Perform dry rotation test before coolant fill

• Check for smooth operation and proper seating

4.2 Maintenance & Troubleshooting

Maintenance Tips:
✔ Annual inspection for wear and leakage
✔ Coolant replacement per manufacturer schedule
✔ Pulley/belt alignment checks
✔ Avoid dry running during service

---

5. Why Choose Type 70 Shaft Mechanical Seal?

• OE Equivalent Quality – Meets or exceeds original equipment standards

• Extended Service Intervals – Reduces maintenance frequency

• Improved Efficiency – Lower friction than traditional seals

• Comprehensive Compatibility – Works with all standard coolants

Performance Comparison

---

6. Conclusion & Recommendations

The Type 70 Shaft Mechanical Seal represents the pinnacle of sealing technology for automotive water pump applications. Its advanced design and premium materials provide:
✓ Superior leak prevention – Protects engine cooling systems
✓ Extended durability – Reduces replacement frequency
✓ Improved efficiency – Lowers parasitic power loss

For optimal performance:

1. Follow proper installation procedures

2. Use recommended coolants and lubricants

3. Perform regular maintenance inspections

Contact our technical team for application-specific recommendations!

---

16 Common Technical Q&As About Type 70 Shaft Mechanical Seal

1. Q: What makes Type 70 Shaft Mechanical Seals different from conventional water pump seals?
   A: The Type 70 Shaft Mechanical Seal features:

• Precision-lapped silicon carbide faces (vs. traditional carbon seals)

• Spring-loaded design for constant face contact

• 360° sealing protection (vs. lip seal's single contact point)
  Resulting in 3x longer service life in automotive applications.

2.Q: What temperature range can these shaft mechanical seals withstand?
A: Type 70 Shaft Mechanical Seals operate reliably from:

• Low temp: -40°C (-40°F)

• High temp: 180°C (356°F)
  Special high-temp versions available up to 220°C (428°F).

3.Q: Which coolant types are compatible with these seals?
A: Our Shaft Mechanical Seals work with:

• Standard ethylene glycol coolants

• OAT (Organic Acid Technology) formulas

• Hybrid and phosphate-free coolants

• Propylene glycol-based solutions

4.Q: How do I select the right shaft mechanical seal for my vehicle?
A: You'll need:

1. Pump manufacturer and model

2. Shaft diameter (typically 12-25mm for automotive)

3. Seal housing dimensions

4. Coolant type used
   Our cross-reference guide simplifies selection.

5.Q: What's the typical service life in passenger vehicles?
A: Type 70 Shaft Mechanical Seals typically last:

• 80,000-120,000 miles in normal service

• 50,000-80,000 miles in severe service (towing, extreme temps)

• 30-50% longer than OEM lip seals

6.Q: Can these seals handle stop-and-go city driving conditions?
A: Yes, the Shaft Mechanical Seal design excels in:

• Frequent thermal cycling

• Intermittent operation

• Low-speed/high-torque conditions
  Common in urban driving environments.

7.Q: What maintenance do these shaft seals require?
A: Unlike lip seals, Type 70 Shaft Mechanical Seals need:

• Annual visual inspection

• Coolant changes per OEM schedule

• No periodic adjustments

• Replacement at water pump service intervals

8.Q: How do I troubleshoot coolant leaks?
A: For leakage:

1. Check seal installation (90% of leaks are install-related)

2. Inspect seal faces for chips/cracks

3. Verify proper shaft surface finish

4. Ensure correct coolant level/pressure

9.Q: Are special tools needed for installation?
A: Basic tools required:

• Seal installation sleeve

• Shaft protector

• Alignment gauge
  Most professional shops already have these.

10.Q: Can I install this seal without removing the water pump?
A: While possible on some models, we recommend:

• Complete pump removal for proper cleaning

• Full inspection of all components

• Correct seal seating verification
  This ensures optimal performance.

11.Q: What causes premature shaft seal failure?
A: Common causes include:

• Improper installation (60% of cases)

• Coolant contamination

• Shaft wear or damage

• Excessive vibration
  Our failure analysis service identifies root causes.

12.Q: Are these seals suitable for performance/racing applications?
A: Yes, our high-performance Shaft Mechanical Seals feature:

• Reinforced spring design

• Ultra-hard face materials

• High-RPM stability
  Proven in track use up to 10,000 RPM.

13.Q: How do these seals perform in diesel engines?
A: In diesel applications, Type 70 seals:

• Handle higher vibration levels

• Withstand greater shaft loads

• Resist chemical degradation
  Outperforming conventional seals by 40%.

14.Q: What's the proper storage method for spare seals?
A: Store Shaft Mechanical Seals:

• In original packaging

• Away from direct sunlight

• Below 40°C (104°F)

• With annual condition checks

15.Q: Can these seals be used with waterless coolants?
A: Yes, when configured with:

• Special high-temp elastomers

• Compatible face materials

• Proper installation technique
  Consult our tech team for specific formulations.

16.Q: What warranty coverage is provided?
A: Our Shaft Mechanical Seals come with:

• 2-year unlimited mileage warranty

• Defect coverage including materials/workmanship

• Professional installation requirement
  See full terms at [company website].

Key Technical Takeaways:

1. Proper installation is critical for optimal Shaft Mechanical Seal performance

2. Material selection should match coolant type and operating conditions

3. Regular coolant maintenance extends seal life

4. Professional installation prevents most premature failures

Pro Tip: Always inspect the shaft surface before installing a new Shaft Mechanical Seal. Even minor shaft wear can compromise seal performance.

Support Services Available:

• Technical hotline (24/7 for emergencies)

• Installation training programs

• Failure analysis reports

• Custom engineering solutions

For vehicle-specific recommendations, consult our application engineers with your VIN or pump details. We provide complete technical support for all Type 70 Shaft Mechanical Seal installations.