Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CF24

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

John Crane Type 24 Elastomer Bellow Shaft Seal: Advanced Sealing Technology for Industrial Pumps

1. Introduction to John Crane Type 24 Mechanical Seal

The John Crane Type 24 Mechanical Seal represents a breakthrough in elastomer bellow sealing technology, designed specifically for demanding pump applications across industries. As part of the renowned John Crane Mechanical Seal series, this model combines superior leak prevention with extended service life in corrosive, abrasive, and high-temperature environments.

Key Advantages of John Crane Type 24 Mechanical Seal

✔ Zero-Leak Performance – Hermetic bellow design eliminates secondary leakage paths
✔ Chemical Resistance – Compatible with acids, solvents, and caustics
✔ Vibration Damping – Reduces shaft whip and seal face wear
✔ Easy Installation – Pre-assembled cartridge configuration
✔ Temperature Range – -50°C to 200°C (-58°F to 392°F)

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2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Extreme Conditions

The John Crane Mechanical Seal Type 24 utilizes:

• Bellow Materials:
  • FKM (Viton®) – Hydrocarbon and chemical resistance
  • EPDM – Steam and hot water applications
  • HNBR – Enhanced mechanical properties

• Seal Faces:
  • Silicon Carbide (SiC) – Ultra-hard, wear-resistant
  • Tungsten Carbide (WC) – High-pressure capability
  • Carbon Graphite – Self-lubricating properties

• Metal Components:
  • 316L Stainless Steel – General corrosion resistance
  • Hastelloy C276 – Extreme chemical environments

2.2 Precision Manufacturing Process

✔ CNC Machining – ±0.005mm dimensional accuracy
✔ Laser Surface Finishing – <0.2μm Ra face flatness
✔ Dynamic Balancing – Minimizes vibration at 3600+ RPM
✔ Helium Leak Testing – 100% quality verification

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3. Applications of John Crane Mechanical Seal Type 24

3.1 Chemical Processing

• Sulfuric acid circulation pumps

• Caustic transfer systems

• Solvent recovery units

3.2 Oil & Gas

• Crude oil pipeline pumps

• Refinery charge pumps

• LNG transfer systems

3.3 Power Generation

• Boiler feed pumps (200°C/392°F)

• Cooling water circulation

• Flue gas desulfurization systems

3.4 Water Treatment

• Seawater reverse osmosis

• Slurry pumping applications

• Wastewater aeration

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4. Installation & Maintenance Best Practices

4.1 Proper Installation Guidelines

1. Pre-Installation Checks

• Verify shaft runout ≤0.05mm

• Inspect seal chamber for scoring/damage

2. Seal Mounting Procedure

• Lubricate O-rings with perfluorinated grease

• Use installation sleeve for damage-free assembly

• Torque gland bolts to 25-30 Nm

3. Commissioning Verification

• Perform dry rotation test

• Monitor initial 24-hour operation

4.2 Maintenance & Troubleshooting

Predictive Maintenance Tips:
• Monthly vibration analysis (ISO 10816 standards)
• Quarterly flush system inspections
• Annual seal face condition checks via borescope

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5. Why Choose John Crane Mechanical Seal Type 24?

Performance Comparison

Regulatory Compliance

✔ API 682 Plan 11/21/32
✔ ISO 21049 Category 1
✔ NACE MR0175 (H₂S Service)
✔ EHEDG (Food Grade Options)

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6. Conclusion & Recommendations

The John Crane Mechanical Seal Type 24 delivers unmatched reliability through:
✓ Advanced elastomer bellow technology
✓ Precision-engineered face combinations
✓ Proven performance in extreme conditions

For optimal results:

1. Select materials matching your process media

2. Follow OEM installation procedures

3. Implement condition-based maintenance

Contact our sealing specialists for application engineering support.

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15 Common Technical Q&As About Type 24 John Crane Mechanical Seal

1. Q: What makes the Type 24 John Crane Mechanical Seal unique compared to standard mechanical seals?
   A: The Type 24 John Crane Mechanical Seal features:

• Integrated elastomer bellows eliminating secondary seals

• Patented face alignment technology

• 50% longer service life than conventional seals

• Reduced maintenance requirements
  These innovations make it ideal for critical pump applications.

2.Q: What pressure and temperature ranges can the Type 24 John Crane Mechanical Seal handle?
A: Standard configurations operate at:

• Pressure: Vacuum to 25 bar (360 psi)

• Temperature: -50°C to 200°C (-58°F to 392°F)
  Special designs available for extreme conditions up to 250°C (482°F).

3.Q: Which materials are recommended for hydrochloric acid service?
A: For HCl applications, specify Type 24 John Crane Mechanical Seals with:

• Faces: SiC/SiC

• Bellows: PTFE

• Metal parts: Hastelloy C276
  This combination provides excellent corrosion resistance.

4.Q: How do I select the right Type 24 John Crane Mechanical Seal for my application?
A: Selection requires:

1. Pump model and operating conditions

2. Shaft diameter and seal chamber dimensions

3. Process media characteristics

4. Temperature/pressure requirements
   Our engineers provide specific recommendations.

5.Q: What's the typical service life in refinery applications?
A: Type 24 John Crane Mechanical Seals typically achieve:

• 3-5 years in clean hydrocarbon service

• 2-3 years in mild abrasive service

• 1-2 years in severe slurry service
  Proper maintenance extends these timelines.

6.Q: Can these seals handle thermal shock in process plants?
A: Yes, Type 24 John Crane Mechanical Seals are designed for:

• Temperature swings up to 150°C/hour

• Continuous operation across full temperature range

• Instantaneous cold starts
  Special materials accommodate thermal expansion.

7.Q: What maintenance is required for these seals?
A: Type 24 John Crane Mechanical Seals require:

• Monthly visual inspections

• Quarterly vibration checks

• Annual comprehensive examinations
  Unlike conventional seals, they don't need frequent adjustments.

8.Q: How do I troubleshoot premature failure?
A: For early failures:

1. Check for proper installation (90% of issues are install-related)

2. Inspect seal faces for unusual wear patterns

3. Verify process fluid contamination levels

4. Examine shaft runout and alignment

9.Q: Are special tools required for installation?
A: Basic tools needed for Type 24 John Crane Mechanical Seal installation:

• Micrometer for shaft measurement

• Alignment gauge

• Torque wrench
  All necessary tools are provided with the seal.

10.Q: Can existing pumps be retrofitted with these seals?
A: Yes, our engineering team can:

• Design adapter kits for most pump models

• Provide custom mounting solutions

• Offer onsite retrofit supervision
  Typically improving reliability by 30-50%.

11.Q: What instrumentation is recommended for monitoring?
A: For Type 24 John Crane Mechanical Seals, we suggest:

• Pressure transducers on flush lines

• Temperature sensors at seal faces

• Vibration monitors on bearing housings

• Leakage detection systems

12.Q: Are these seals suitable for food-grade applications?
A: Yes, we offer FDA-compliant Type 24 John Crane Mechanical Seals with:

• Ceramic seal faces

• FDA-grade elastomers

• CIP/SIP compatibility
  Ideal for pharmaceutical and food processing.

13.Q: What's the ROI when upgrading to Type 24 seals?
A: Documented benefits include:

• 40% reduction in seal-related downtime

• 50% longer mean time between repairs

• Payback period of 6-12 months
  Contact us for a customized ROI analysis.

14.Q: How should spare Type 24 John Crane Mechanical Seals be stored?
A: Proper storage requires:

• Original packaging

• Climate-controlled environment

• Away from ozone/UV light

• Annual condition checks

15.Q: What warranty coverage is provided?
A: Type 24 John Crane 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 performance

2. Material selection must match process media

3. Regular maintenance prevents unexpected failures

4. Genuine John Crane parts provide better ROI

Pro Tip: Always verify shaft surface finish (0.4-0.8μm Ra) before installing a new Type 24 John Crane Mechanical Seal. Minor shaft imperfections can significantly reduce seal life.

Support Services Available:

• 24/7 technical support

• Failure analysis and reporting

• Onsite training programs

• Custom engineering solutions

For application-specific recommendations, consult our sealing specialists with your pump parameters and process data. We provide complete lifecycle support for your sealing systems.