Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CF515

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.

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Why Choose Us

Type 515 High-Temperature Metal Bellow John Crane Mechanical Seal: The Ultimate Sealing Solution for Extreme Conditions

1. Introduction to Metal Bellow John Crane Mechanical Seals

The Type 515 High-Temperature Metal Bellow John Crane Mechanical Seal is engineered for reliability in the most demanding industrial applications. Designed to withstand extreme temperatures, high pressures, and corrosive environments, this seal eliminates the limitations of conventional elastomer-based seals. Whether in refineries, chemical plants, or power generation facilities, the Metal Bellow John Crane Mechanical Seal ensures zero leakage, reduced maintenance, and extended equipment lifespan.

Key Advantages of Type 515 Metal Bellow John Crane Mechanical Seals

✔ High-Temperature Resistance – Operates from -200°C to 450°C (-328°F to 842°F)
✔ Zero-Leakage Design – Welded metal bellows prevent fugitive emissions
✔ Corrosion & Abrasion Resistance – Premium materials for harsh chemical and slurry applications
✔ Long Service Life – Reduced downtime and maintenance costs

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2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Extreme Conditions

The Type 515 Metal Bellow John Crane Mechanical Seal utilizes:

• Bellows Material: Hastelloy C-276, Inconel 625, or 316L stainless steel for superior corrosion resistance.

• Seal Faces: Silicon carbide (SiC), tungsten carbide (WC), or diamond-coated for wear resistance.

• Secondary Seals: Flexible graphite or PTFE for high-temperature stability.

2.2 Advanced Manufacturing Process

✔ Laser Welding – Ensures hermetic sealing and structural integrity
✔ Dynamic Balancing – Minimizes vibration in high-speed applications
✔ Helium Leak Testing – Guarantees zero leakage before shipment

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3. Applications of Metal Bellow John Crane Mechanical Seals

3.1 Oil & Gas Refineries

• High-pressure hydrocarbon pumps

• Sour gas (H₂S) environments with NACE MR0175 compliance

3.2 Chemical Processing

• Acid & caustic transfer pumps (sulfuric acid, hydrochloric acid, sodium hydroxide)

• Polymerization reactor feed pumps

3.3 Power Generation

• Boiler feed pumps (up to 400°C / 752°F)

• Geothermal steam applications

3.4 Cryogenic & LNG Services

• LNG transfer pumps (-160°C / -256°F)

• Liquid nitrogen and oxygen handling

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4. Installation & Maintenance Best Practices

4.1 Proper Installation Guidelines

1. Pre-Installation Checks

• Verify shaft runout (≤0.05mm) and seal chamber dimensions.

• Ensure clean, debris-free pump internals.

2. Mounting the Seal

• Carefully slide the Metal Bellow John Crane Mechanical Seal onto the shaft.

• Secure with manufacturer-recommended torque settings.

3. Final Adjustments

• Remove shipping clips (if applicable).

• Perform a dry rotation test to confirm smooth operation.

4.2 Maintenance & Troubleshooting

Maintenance Tips:
✔ Annual inspections for bellows integrity
✔ Vibration monitoring to detect early failure signs
✔ Flush system optimization for abrasive services

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5. Why Choose Type 515 Metal Bellow John Crane Mechanical Seals?

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

• Customizable Designs – Available in multiple face materials and bellows configurations.

• Global Technical Support – Rapid response for troubleshooting and spare parts.

Final Recommendation:
For industries requiring high-performance, zero-leakage sealing, the Type 515 Metal Bellow John Crane Mechanical Seal delivers unmatched reliability. Its welded metal bellows design ensures long-term performance in the most demanding conditions.

Contact us today for a custom sealing solution tailored to your needs!

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Here are 10 professional Q&As about Type 515 High Temperature Metal Bellow John Crane Mechanical Seals 

1. Q: What temperature range can the Type 515 Metal Bellow John Crane Mechanical Seal handle?
   A: The Type 515 Metal Bellow John Crane Mechanical Seal is designed for continuous operation from -200°C to 450°C (-328°F to 842°F). Special configurations can extend this range for specific applications while maintaining seal integrity.

2. Q: Why choose metal bellows over conventional elastomer seals in high-temperature applications?
   A: Metal Bellow John Crane Mechanical Seals eliminate elastomer degradation issues by using:

• All-metal welded bellows construction

• High-temperature resistant secondary seals

• Thermal-stable face materials
  This design prevents seal failure in extreme heat where traditional seals would deteriorate.

3.Q: What materials are used in the Type 515 for corrosive chemical services?
A: For corrosive applications, the Metal Bellow John Crane Mechanical Seal features:

• Bellows: Hastelloy C276 or Inconel 625

• Seal faces: Silicon carbide vs. silicon carbide

• Secondary seals: Flexible graphite or PTFE
  This combination provides excellent resistance to acids, caustics, and solvents.

4.Q: How does the Type 515 Metal Bellow John Crane Mechanical Seal prevent emissions?
A: The seal achieves near-zero emissions through:

• Hermetically welded metal bellows

• Precision-lapped seal faces (Ra < 0.2μm)

• API 682 compliant designs
  Independent testing shows leakage rates <5 ml/hr in standard applications.

5.Q: What's the installation procedure for Type 515 seals?
A: Proper installation of Metal Bellow John Crane Mechanical Seals requires:

1. Verify shaft runout <0.05mm

2. Clean and inspect seal chamber

3. Install using alignment tools

4. Torque fasteners to specified values

5. Remove all shipping restraints
   Following these steps ensures optimal seal performance.

6.Q: How often should Type 515 seals be maintained?
A: Recommended maintenance for Metal Bellow John Crane Mechanical Seals:

• Monthly: Visual inspection and vibration checks

• Quarterly: Flush system evaluation

• Annually: Comprehensive disassembly inspection
  Unlike conventional seals, they don't require frequent O-ring replacements.

7.Q: Can the Type 515 handle thermal cycling in refinery applications?
A: Yes, the Metal Bellow John Crane Mechanical Seal is specifically engineered for thermal cycling with:

• Prestressed bellows to absorb expansion/contraction

• Thermal barrier coatings

• High conductivity materials
  Proven in FCCU services with 300°C/hour temperature swings.

8.Q: What causes premature failure in these seals?
A: Common failure modes for Metal Bellow John Crane Mechanical Seals include:

• Dry running (>5 minutes without lubrication)

• Excessive vibration or misalignment

• Chemical attack on materials

• Improper flush system operation
  Root cause analysis is recommended for recurring issues.

9.Q: Are these seals suitable for sour gas (H2S) service?
A: Absolutely. We offer NACE MR0175 compliant Metal Bellow John Crane Mechanical Seals with:

• H2S-resistant alloys (UNS N06625, UNS N10276)

• Special face material combinations

• Certified elastomers
  Tested and proven in sour gas applications worldwide.

10.Q: What's the typical ROI when upgrading to Type 515 seals?
A: Documented benefits include:

• 40-60% longer service life vs conventional seals

• 50% reduction in maintenance hours

• Payback period of 8-14 months
  For a customized ROI analysis, provide your current seal performance data.

Key Takeaway:
The Type 515 Metal Bellow John Crane Mechanical Seal provides unmatched reliability in extreme conditions through its robust construction and advanced materials. For application-specific recommendations, consult our sealing specialists with your operating parameters.