Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CT609

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 609 High-Temperature Prestressed Metal Bellow Mechanical Seals for Petrochemical Equipment & Chemical Industry

1. Introduction to Metal Bellow Mechanical Seals for Petrochemical Equipment & Chemical Industry

The Type 609 High-Temperature Prestressed Metal Bellow Mechanical Seals are engineered to meet the extreme demands of petrochemical equipment and chemical industry applications. These seals are designed to operate reliably in high-pressure, high-temperature, and corrosive environments where conventional elastomer-based seals fail.

Key Advantages of Type 609 Metal Bellow Mechanical Seals

✔ Prestressed bellows design – Enhances fatigue resistance under thermal cycling
✔ Zero-emission sealing – Eliminates fugitive emissions in compliance with environmental regulations
✔ Wide temperature range – Operates from -200°C to 450°C (-328°F to 842°F)
✔ Corrosion-resistant materials – Ideal for aggressive chemicals, acids, and sour gas

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2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Harsh Environments

The Type 609 Metal Bellow Mechanical Seals for Petrochemical Equipment & Chemical Industry utilize:

• 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 leak-free bellows construction
✔ Prestressing treatment improves fatigue life under thermal shock
✔ Dynamic balancing for vibration-free operation in high-speed pumps

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3. Applications in Petrochemical Equipment & Chemical Industry

3.1 Refinery & Petrochemical Pumps

• High-temperature hydrocarbon processing (e.g., crude oil, naphtha, benzene)

• Sour gas service (H₂S environments) with NACE MR0175 compliance

3.2 Chemical Processing Plants

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

• Solvent & monomer transfer pumps

3.3 High-Pressure Reactor Feed Pumps

• Polymerization processes

• Catalyst injection systems

3.4 LNG & Cryogenic Applications

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

• Liquid nitrogen & 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 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 609 Metal Bellow 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 petrochemical equipment and chemical industry applications requiring zero-leakage, high-temperature sealing, the Type 609 Metal Bellow Mechanical Seals provide unmatched reliability. Their prestressed 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 Metal Bellows Mechanical Seals for Petrochemical Equipment & Chemical Industry 

1. Q: What makes Metal Bellows Mechanical Seals superior to conventional seals in petrochemical applications?
   A: Metal Bellows Mechanical Seals provide three critical advantages for petrochemical equipment:

1. Elimination of elastomers that degrade in hydrocarbon services

2. Welded metal construction prevents fugitive emissions

3. Withstand thermal cycling from -200°C to 450°C
   These features make them ideal for refinery pumps handling hot hydrocarbons and aggressive chemicals.

1. Q: How do I select the right Metal Bellows Mechanical Seal for high-temperature reactor feed pumps?
   A: For reactor feed pumps in chemical industry, we recommend:

• Bellows: Inconel 625 or Hastelloy C276

• Seal faces: Silicon carbide vs. silicon carbide

• Flush plan: API Plan 53B dual pressurized system
  Our Type 609 seal with prestressed bellows is specifically designed for these severe services.

1. Q: What materials are best for Metal Bellows Mechanical Seals in sour gas (H2S) service?
   A: For sour gas applications in petrochemical equipment, specify:

• NACE MR0175 compliant materials

• Hastelloy C276 bellows

• Tungsten carbide vs. carbon faces

• Flexible graphite secondary seals
  This combination resists sulfide stress cracking while maintaining seal integrity.

1. Q: Can Metal Bellows Mechanical Seals handle thermal shock in catalytic cracking units?
   A: Yes, our Type 609 Metal Bellows Mechanical Seals feature:

• Prestressed bellows design to absorb thermal expansion

• Thermal barrier coatings on seal faces

• High-conductivity materials to dissipate heat
  Proven in FCCU services with temperature swings up to 300°C/hour.

1. Q: What's the typical MTBF for Metal Bellows Mechanical Seals in chemical pumps?
   A: In chemical industry applications, properly specified Metal Bellows Mechanical Seals achieve:

• 3-5 years in non-abrasive services

• 2-3 years with mild abrasives

• 1-2 years in severe slurry services
  Actual life depends on proper flush system operation and maintenance practices.

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

1. Bellows cracking: Check for thermal shock or overpressure

2. Corrosion pits: Verify material compatibility with process media

3. Fatigue fractures: Inspect for excessive vibration or misalignment
   Our engineers can perform metallurgical analysis to determine root causes.

1. Q: What maintenance is required for Metal Bellows Mechanical Seals in continuous operation?
   A: Recommended maintenance for Metal Bellows Mechanical Seals in petrochemical equipment:

• Monthly: Check flush system pressures and temperatures

• Quarterly: Inspect seal faces via borescope

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

1. Q: Are Metal Bellows Mechanical Seals suitable for LNG transfer pumps?
   A: Absolutely. Our cryogenic Metal Bellows Mechanical Seals feature:

• Special low-temperature alloys (304L, 316L)

• Thermal contraction compensation design

• LNG service certification
  Proven in -160°C LNG loading pumps with zero leakage.

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

1. Verify shaft runout <0.05mm

2. Check seal chamber squareness

3. Install using alignment fixtures

4. Torque hardware to spec

5. Remove all shipping restraints
   Proper installation doubles seal life compared to improper methods.

1. Q: What ROI can I expect when upgrading to Metal Bellows Mechanical Seals?
   A: Typical benefits in petrochemical equipment:

• 40-60% longer MTBR vs. conventional seals

• 80% reduction in emission-related shutdowns

• Payback in 9-15 months
  For a customized ROI analysis, provide your current seal performance data.

Key Takeaway:
Metal Bellows Mechanical Seals provide unmatched reliability for petrochemical and chemical applications. Their robust construction eliminates common failure points while meeting stringent environmental regulations. For application-specific recommendations, consult our sealing specialists with your operating parameters.