Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CF606

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 606 High-Temperature John Crane Metal Bellows Mechanical Seals: Superior Performance for Extreme Conditions

1. Introduction to Metal Bellows Mechanical Seals

Metal Bellows Mechanical Seals are engineered for reliability in high-temperature, high-pressure, and corrosive environments. The Type 606 John Crane Metal Bellows Mechanical Seals are specifically designed for demanding applications where traditional elastomer-based seals fail. These seals eliminate the need for secondary sealing elements like O-rings, making them ideal for extreme heat, cryogenic conditions, and aggressive chemicals.

Key Advantages of Metal Bellows Mechanical Seals

✔ No elastomers – Eliminates degradation from heat and chemicals
✔ High-temperature resistance – Operates from -200°C to 450°C (-328°F to 842°F)
✔ Zero leakage – Welded metal bellows prevent fugitive emissions
✔ Long service life – Reduced maintenance and downtime

---

2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Extreme Conditions

The Type 606 Metal Bellows Mechanical Seals utilize:

• Bellows Material: Hastelloy C276, Inconel 718, or 316L stainless steel for corrosion resistance.

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

• Welded Construction: Laser-welded bellows ensure leak-free performance.

2.2 Precision Manufacturing Process

John Crane’s Metal Bellows Mechanical Seals undergo:
✔ CNC machining for dimensional accuracy
✔ Helium leak testing to confirm hermetic sealing
✔ Dynamic balancing for vibration-free operation

---

3. Applications of Type 606 Metal Bellows Mechanical Seals

These seals excel in industries requiring zero-emission sealing solutions:

3.1 Oil & Gas

• Refinery pumps handling hot hydrocarbons

• Pipeline booster pumps in sour gas service (H₂S environments)

3.2 Chemical Processing

• Sulfuric acid, caustic, and solvent pumps

• High-temperature reactor feed pumps

3.3 Power Generation

• Boiler feed pumps (up to 400°C / 750°F)

• Geothermal steam applications

3.4 Cryogenic & LNG

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

• Liquid nitrogen and oxygen pumps

---

4. Installation & Maintenance Best Practices

4.1 Proper Installation Guidelines

1. Pre-Installation Checks

• Verify seal size matches pump specifications.

• Inspect shaft runout (must be ≤0.05mm).

2. Mounting the Seal

• Slide the Metal Bellows Mechanical Seal onto the shaft without forcing.

• Secure with manufacturer-recommended torque settings.

3. Final Adjustments

• Remove shipping clips (if applicable).

• Perform a dry run test to check alignment.

4.2 Maintenance & Troubleshooting

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

---

5. Why Choose Type 606 John Crane Metal Bellows Mechanical Seals?

• API 682 Compliance – Meets stringent industry standards for emissions control.

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

• Global Support – John Crane provides 24/7 technical assistance and rapid spare parts delivery.

Final Recommendation:
For high-temperature, corrosive, or cryogenic applications, the Type 606 Metal Bellows Mechanical Seals deliver unmatched reliability. Their elastomer-free design ensures long-term performance where conventional seals fail.

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

---

Here are 10 professional Q&As about Metal Bellows Mechanical Seals 

1. Q: What are the main advantages of Metal Bellows Mechanical Seals compared to conventional seals?
   A: Metal Bellows Mechanical Seals offer three key advantages:

1. Superior temperature resistance (-200°C to 450°C)

2. Elimination of elastomers that degrade in harsh conditions

3. Zero leakage welded construction for emission control
   These features make Metal Bellows Mechanical Seals ideal for refinery, chemical, and power generation applications.

1. Q: What materials are used in Metal Bellows Mechanical Seals for corrosive applications?
   A: For corrosive services, we recommend Metal Bellows Mechanical Seals with:

• Bellows: Hastelloy C276 or Inconel 625

• Seal faces: Silicon carbide vs. silicon carbide

• Hardware: Super duplex stainless steel
  This combination provides excellent resistance to acids, caustics, and sour gas environments.

1. Q: How do I select the right Metal Bellows Mechanical Seal for high-temperature services?
   A: Selection criteria for high-temperature Metal Bellows Mechanical Seals include:

1. Maximum operating temperature

2. Thermal cycling requirements

3. Pressure differentials

4. Process media compatibility
   Our Type 606 seal with Inconel bellows and SiC faces is rated for continuous 450°C operation.

1. Q: What's the typical service life of Metal Bellows Mechanical Seals in refinery applications?
   A: In refinery services, properly specified Metal Bellows Mechanical Seals typically achieve:

• 3-5 years in clean hydrocarbon services

• 2-3 years in catalytic slurry services

• 1-2 years in coker services
  Regular monitoring of bellows condition can help maximize seal life.

1. Q: Can Metal Bellows Mechanical Seals handle abrasive media?
   A: Yes, with proper configuration:

1. Use hard face materials (SiC/SiC or WC/WC)

2. Implement API Plan 32 external flush

3. Specify reinforced bellows design
   These modifications allow Metal Bellows Mechanical Seals to handle slurries with up to 15% solids content.

1. Q: What maintenance is required for Metal Bellows Mechanical Seals?
   A: Metal Bellows Mechanical Seals require:

• Quarterly visual inspections

• Annual comprehensive checks

• Vibration monitoring

• Flush system maintenance
  Unlike conventional seals, they don't need O-ring replacements, reducing maintenance by 40-60%.

1. Q: How do I troubleshoot premature failure of Metal Bellows Mechanical Seals?
   A: Common failure modes and solutions:

1. Bellows cracking: Check for thermal shock or overpressure

2. Face wear: Verify proper flush rate and alignment

3. Corrosion: Review material selection for media compatibility
   Our field engineers can perform root cause analysis on failed Metal Bellows Mechanical Seals.

1. Q: What's the proper installation procedure for Metal Bellows Mechanical Seals?
   A: Critical installation steps:

1. Verify shaft runout (<0.05mm)

2. Check chamber dimensions

3. Install per manufacturer torque specs

4. Remove all shipping restraints

5. Perform dry rotation test
   Proper installation doubles the life of Metal Bellows Mechanical Seals compared to improper installation.

1. Q: Are Metal Bellows Mechanical Seals suitable for cryogenic applications?
   A: Absolutely. Our cryogenic-grade Metal Bellows Mechanical Seals feature:

• Special low-temperature alloys

• Thermal contraction compensation

• LNG service certification
  They're proven in LNG pumps operating at -160°C with zero leakage.

1. Q: What's the ROI when upgrading to Metal Bellows Mechanical Seals?
   A: Typical benefits:

• 30-50% longer mean time between repairs

• 60% reduction in emission-related downtime

• Payback in 8-14 months
  For a precise ROI calculation, provide your current seal performance data and maintenance costs.

Key Takeaway:
Metal Bellows Mechanical Seals provide superior reliability in extreme conditions. Their elastomer-free design eliminates common failure points while meeting stringent emission standards. For application-specific recommendations, consult our engineering team with your operating parameters.