Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CFcrane2

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 2 Mechanical Seal on Pump: High-Performance Sealing Solution for Industrial Applications

1. Introduction to John Crane Type 2 Mechanical Seal on Pump

The John Crane Type 2 Mechanical Seal on Pump is a robust and reliable sealing solution designed for centrifugal pumps in demanding industrial environments. Engineered for durability and efficiency, this mechanical seal prevents leakage, reduces maintenance costs, and extends pump lifespan. The John Crane Type 2 Mechanical Seal on Pump is widely used in industries such as oil & gas, chemical processing, water treatment, and power generation, where sealing integrity is critical.

Key Advantages of John Crane Type 2 Mechanical Seal on Pump

✔ Leak-Free Performance – Precision-engineered sealing faces minimize fluid loss
✔ Extended Service Life – High-quality materials reduce wear and downtime
✔ Versatile Applications – Suitable for clean, abrasive, and corrosive media
✔ Easy Installation & Maintenance – Pre-assembled cartridge design simplifies replacement

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2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Optimal Performance

The John Crane Type 2 Mechanical Seal on Pump is constructed with high-performance materials to ensure reliability in harsh conditions:

• Primary Seal Faces:
  • Silicon Carbide (SiC) – Excellent wear resistance for abrasive fluids
  • Tungsten Carbide (WC) – High-pressure and high-temperature stability
  • Carbon Graphite – Self-lubricating properties for dry-running conditions

• Secondary Seals & Elastomers:
  • FKM (Viton®) – Chemical resistance to oils, fuels, and solvents
  • EPDM – Ideal for water and steam applications
  • PTFE (Teflon®) – Inert to aggressive chemicals

• Metal Components:
  • 316 Stainless Steel – Corrosion-resistant for general applications
  • Hastelloy C276 – For highly corrosive environments (e.g., sulfuric acid, chlorine)

2.2 Precision Manufacturing & Quality Control

✔ CNC Machining – Ensures tight tolerances (±0.005mm)
✔ Laser Surface Finishing – Achieves ultra-smooth sealing faces (Ra < 0.2µm)
✔ Dynamic Balancing – Reduces vibration in high-speed pumps
✔ Helium Leak Testing – Guarantees zero leakage before shipment

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3. Applications of John Crane Type 2 Mechanical Seal on Pump

3.1 Oil & Gas Industry

• Crude oil transfer pumps

• Refinery process pumps

• Offshore seawater injection pumps

3.2 Chemical Processing

• Acid and solvent circulation pumps

• Polymer production reactors

• Caustic handling systems

3.3 Water & Wastewater Treatment

• Municipal water supply pumps

• Slurry and sewage transfer pumps

• Desalination plant high-pressure pumps

3.4 Power Generation

• Boiler feed pumps

• Cooling water circulation systems

• Condensate extraction pumps

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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 cleanliness and damage

2. Mounting the Seal

• Lubricate O-rings with compatible grease

• Use alignment tools for precise positioning

• Torque fasteners to manufacturer specifications

3. Post-Installation Verification

• Perform a dry rotation test before startup

• Monitor initial operation for leaks or vibration

4.2 Maintenance & Troubleshooting

Maintenance Tips:
✔ Monthly inspections for leaks and wear
✔ Annual overhauls for critical applications
✔ Flush system optimization for abrasive services

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5. Why Choose John Crane Type 2 Mechanical Seal on Pump?

• API 682 & ISO 21049 Compliance – Meets global industry standards

• Customizable Configurations – Multiple face materials and elastomers available

• Global Technical Support – Fast response for troubleshooting

Performance Comparison

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6. Conclusion & Recommendations

The John Crane Type 2 Mechanical Seal on Pump delivers superior sealing performance in demanding industrial applications. Its robust construction, leak-free operation, and extended lifespan make it the preferred choice for critical pump systems.

For optimal results:

1. Select the right material for your application

2. Follow proper installation procedures

3. Implement a preventive maintenance schedule

Contact our technical team for expert guidance on seal selection!

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12 Common Technical Q&As About John Crane Type 2 Mechanical Seal on Pump

1. Q: What makes the John Crane Type 2 Mechanical Seal on Pump different from standard mechanical seals?
   A: The John Crane Type 2 Mechanical Seal on Pump features:

• Patented balanced seal design for reduced face loading

• Pre-assembled cartridge configuration for error-proof installation

• 40% longer service life than conventional seals

• API 682 Plan 11/21/32 flush system compatibility

2.Q: What pressure and temperature ranges can the John Crane Type 2 Mechanical Seal on Pump handle?
A: Standard models operate reliably at:

• Pressure: Vacuum to 25 bar (360 psi)

• Temperature: -40°C to 180°C (-40°F to 356°F)
  Special configurations available for extreme conditions.

3.Q: Which material combinations are recommended for chemical processing applications?
A: For chemical services, the John Crane Type 2 Mechanical Seal on Pump offers:

• Faces: SiC/SiC or WC/WC

• Elastomers: FFKM or PTFE

• Metal parts: Hastelloy C276
  This combination resists most acids, solvents and caustics.

4.Q: How do I select the right John Crane Type 2 Mechanical Seal on Pump for my application?
A: Selection requires:

1. Pump model and operating parameters

2. Shaft diameter and seal chamber dimensions

3. Process media characteristics

4. Required flush plan (API 682)
   Our engineers provide specific recommendations.

5.Q: What's the typical service life in refinery applications?
A: The John Crane Type 2 Mechanical Seal on Pump typically achieves:

• 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 this seal handle thermal cycling in process plants?
A: Yes, the John Crane Type 2 Mechanical Seal on Pump is 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: The John Crane Type 2 Mechanical Seal on Pump requires:

• 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 John Crane Type 2 Mechanical Seal on Pump 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 this seal?
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's the ROI when upgrading to John Crane Type 2 seals?
A: Documented benefits include:

• 40% reduction in seal-related downtime

• 50% longer mean time between repairs

• Payback period of 6-12 months
  For a customized analysis, provide your current seal performance data.

12.Q: How should spare seals be stored?
A: Store John Crane Type 2 Mechanical Seal on Pump:

• Horizontally in original packaging

• In climate-controlled environments

• Away from ozone/UV light sources

• With annual condition checks

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 John Crane Type 2 Mechanical Seal on Pump. 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.