Size

Custom

Other Attributes

Place of Origin	Zhejiang, China
Brand Name	CF208

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

Double Face Mechanical Shaft Seal: Advanced Sealing Technology for Demanding Applications

1. Introduction to Double Face Mechanical Shaft Seal

The Double Face Mechanical Shaft Seal represents a significant advancement in sealing technology, designed to provide superior performance in high-pressure, high-speed, and corrosive environments. Unlike traditional single-face seals, the Mechanical Shaft Seal with dual-face configuration offers redundant protection against leakage, making it ideal for critical applications in industries such as oil & gas, chemical processing, and power generation.

Key Advantages of Double Face Mechanical Shaft Seal

✔ Zero-Leakage Performance – Dual sealing faces prevent fugitive emissions
✔ Extended Service Life – Robust construction reduces wear and maintenance costs
✔ Wide Temperature & Pressure Range – Operates from -50°C to 300°C (-58°F to 572°F) and up to 60 bar (870 psi)
✔ Corrosion & Abrasion Resistance – Premium materials for harsh environments

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2. Material Composition & Manufacturing Excellence

2.1 Premium Materials for Extreme Conditions

The Double Face Mechanical Shaft Seal utilizes high-performance materials:

• Primary Seal Faces:
  • Silicon carbide (SiC) – For abrasive media
  • Tungsten carbide (WC) – High-pressure applications
  • Diamond-coated faces – Extreme wear resistance

• Secondary Seals:
  • FKM (Viton) – Chemical resistance
  • PTFE – For aggressive acids and solvents
  • EPDM – Water and steam applications

• Metal Components:
  • 316L stainless steel – General corrosion resistance
  • Hastelloy C276 – For sour gas (H₂S) environments
  • Titanium – Seawater and chloride resistance

2.2 Precision Manufacturing Process

✔ CNC Machining – Ensures dimensional accuracy (±0.005mm)
✔ Laser Surface Finishing – Achieves ultra-smooth sealing faces (Ra < 0.1μm)
✔ Dynamic Balancing – Minimizes vibration in high-speed applications
✔ Helium Leak Testing – Guarantees hermetic sealing integrity

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3. Applications of Double Face Mechanical Shaft Seal

3.1 Oil & Gas Industry

• Refinery pumps – High-pressure hydrocarbon transfer

• Offshore platforms – Seawater injection pumps

• Pipeline compressors – Gas sealing applications

3.2 Chemical Processing

• Acid circulation pumps – Sulfuric, hydrochloric, and nitric acid

• Polymerization reactors – High-temperature sealing

3.3 Power Generation

• Boiler feed pumps – High-pressure steam applications

• Cooling water systems – Nuclear and thermal plants

3.4 Marine & Desalination

• Seawater pumps – Reverse osmosis (RO) systems

• Shipboard cooling systems – Corrosion-resistant sealing

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4. Installation & Maintenance Best Practices

4.1 Proper Installation Guidelines

1. Pre-Installation Checks

• Verify shaft runout (≤0.03mm)

• Inspect seal chamber for cleanliness

2. Mounting the Seal

• Use alignment tools for precise positioning

• Apply manufacturer-recommended torque settings

3. Post-Installation Verification

• Perform a dry rotation test

• 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 Double Face Mechanical Shaft Seal?

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

• Customizable Designs – Multiple face materials and elastomer options

• Global Technical Support – Rapid response for troubleshooting

Final Recommendation:
For industries requiring zero-leakage, high-reliability sealing, the Double Face Mechanical Shaft Seal delivers unmatched performance in the most demanding conditions.

Contact us today for a custom-engineered solution!

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15 Common Technical Q&As About Double Face Mechanical Shaft Seal

1. Q: What makes Double Face Mechanical Shaft Seals superior to single mechanical seals?
   A: Double Face Mechanical Shaft Seals provide:

• Redundant sealing protection (primary + secondary faces)

• 99.9% leakage prevention in critical applications

• 40% longer service life than single seals

• Compliance with API 682 emission standards

2.Q: What pressure ranges can these Mechanical Shaft Seals handle?
A: Standard Double Face Mechanical Shaft Seals are rated for:

• Normal range: Vacuum to 40 bar (580 psi)

• High-pressure variants: Up to 100 bar (1450 psi)

• Special designs available for ultra-high pressure applications

3.Q: Which materials are recommended for chemical processing applications?
A: For chemical services, we recommend Mechanical Shaft Seals with:

• Faces: SiC/SiC or WC/WC combinations

• Elastomers: FFKM or PTFE

• Metal parts: Hastelloy C276 or titanium
  This configuration resists most acids, solvents and caustics.

4.Q: How do I select the right Mechanical Shaft Seal for my equipment?
A: Selection requires:

1. Shaft diameter and speed

2. Process media characteristics

3. Pressure/temperature ranges

4. Equipment vibration levels
   Our engineers can provide specific recommendations.

5.Q: What's the typical service life in refinery applications?
A: Double Face Mechanical Shaft 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 cycling in process plants?
A: Yes, Double Face Mechanical Shaft Seals are designed for:

• Temperature swings up to 200°C/hour

• Continuous operation from -50°C to 300°C

• Instantaneous cold starts
  Special materials accommodate thermal expansion.

7.Q: What maintenance is required for Mechanical Shaft Seals?
A: Recommended maintenance includes:

• Monthly: Visual inspections and leakage checks

• Quarterly: Vibration analysis

• Annually: Comprehensive seal examination

• 5-year: Complete overhaul for critical services

8.Q: How do I troubleshoot excessive leakage?
A: For leakage issues:

1. Verify proper installation (90% of leaks are installation-related)

2. Inspect seal faces for damage/wear

3. Check secondary seal condition

4. Confirm correct flush system operation

9.Q: Are these seals suitable for food-grade applications?
A: Yes, we offer FDA-compliant Mechanical Shaft Seals with:

• Ceramic seal faces

• FDA-grade elastomers

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

10.Q: What's the installation procedure for these seals?
A: Critical installation steps:

1. Verify shaft runout <0.03mm

2. Clean seal chamber thoroughly

3. Use alignment tools during mounting

4. Torque to manufacturer specifications

5. Remove all shipping restraints

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

• Design adapter kits for most equipment

• Provide custom mounting solutions

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

12.Q: What instrumentation is recommended for monitoring?
A: For Mechanical Shaft Seals, we suggest:

• Pressure sensors on barrier/buffer systems

• Temperature probes at seal faces

• Vibration monitors on bearing housings

• Leakage detection systems

13.Q: How do these seals perform in cryogenic applications?
A: Our cryogenic Mechanical Shaft Seals feature:

• Special low-temperature alloys

• Thermal contraction compensation

• LNG service certification
  Proven performance down to -200°C.

14.Q: What's the ROI when upgrading to Double Face Mechanical Shaft Seals?
A: Documented benefits include:

• 50% reduction in seal-related downtime

• 40% longer mean time between repairs

• Payback period of 6-18 months
  Contact us for a customized ROI analysis.

15.Q: How do I store spare Mechanical Shaft Seals properly?
A: For optimal storage:

• Keep in original packaging

• Store horizontally in climate-controlled areas

• Avoid exposure to ozone/UV light

• Perform annual condition checks

Key Technical Takeaways:

1. Double Face Mechanical Shaft Seals provide unmatched containment reliability

2. Proper material selection is critical for chemical compatibility

3. Correct installation maximizes seal performance and lifespan

4. Predictive maintenance prevents unexpected failures

Pro Tip: Implement condition monitoring for your Mechanical Shaft Seals to detect early warning signs of potential failures. Our smart monitoring systems can provide real-time performance data.

Support Services Available:

• 24/7 technical support hotline

• Failure analysis and root cause determination

• Onsite installation supervision

• Custom engineering solutions

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