Quantity (pieces) | 1 - 10 | > 10 |
Lead time (days) | 15 | To be negotiated |
Availability: | |
---|---|
Product Description
Size | Custom |
Place of Origin | Zhejiang, China |
Brand Name | CFFBD |
Supply Ability | 10000 Piece/Pieces per Month |
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 |
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.
Why Choose Us
The Type FBD John Crane Mechanical Seal represents the pinnacle of sealing technology, engineered for reliability in the most challenging industrial environments. As a leader in fluid sealing solutions, John Crane Mechanical Seals deliver unmatched performance in high-pressure, high-temperature, and corrosive applications. The Type FBD model combines innovative design with premium materials to prevent leakage, reduce maintenance costs, and extend equipment lifespan across industries such as oil & gas, chemical processing, and power generation.
✔ Zero-Leakage Performance – Dual-face sealing technology prevents fugitive emissions
✔ Extended Service Life – Premium materials for wear and corrosion resistance
✔ High-Temperature & Pressure Capability – Operates from -50°C to 250°C (-58°F to 482°F) and up to 40 bar (580 psi)
✔ Reduced Energy Consumption – Optimized face design lowers friction losses
✔ Easy Installation & Maintenance – Pre-assembled cartridge configuration
The Type FBD John Crane Mechanical Seal utilizes high-performance materials:
Primary Seal Faces:
• Silicon Carbide (SiC) – Exceptional hardness for abrasive media
• Tungsten Carbide (WC) – High-pressure and high-temperature stability
• Diamond-Coated Faces – Ultra-low wear in dry-running conditions
Secondary Seals & Elastomers:
• FKM (Viton®) – Chemical resistance to oils, fuels, and solvents
• FFKM (Perfluoroelastomer) – For aggressive acids and caustics
• PTFE (Teflon®) – Inert to most chemicals
Metal Components:
• 316L Stainless Steel – General corrosion resistance
• Hastelloy C276 – For sour gas (H₂S) and chloride environments
• Titanium – Lightweight and seawater-resistant
✔ CNC Machining – Ensures dimensional accuracy (±0.005mm)
✔ Laser Surface Finishing – Achieves ultra-smooth sealing faces (Ra < 0.1µm)
✔ Helium Leak Testing – Guarantees zero leakage before shipment
✔ Dynamic Balancing – Minimizes vibration in high-speed applications
Refinery process pumps (crude, naphtha, diesel)
Offshore seawater injection pumps
Pipeline booster stations
Acid circulation pumps (sulfuric, hydrochloric, nitric)
Polymerization reactor feeds
Solvent recovery units
Boiler feed pumps (high-pressure steam)
Cooling water circulation systems
Flue gas desulfurization (FGD) pumps
Seawater reverse osmosis (RO) pumps
Shipboard cooling systems
Pre-Installation Checks
Verify shaft runout (≤0.05mm)
Inspect seal chamber for damage or contamination
Mounting the Seal
Lubricate O-rings with compatible grease
Use alignment tools for precise positioning
Torque fasteners to manufacturer specifications
Post-Installation Verification
Perform a dry rotation test
Monitor initial operation for leaks or vibration
Issue | Possible Cause | Solution |
---|---|---|
Excessive Leakage | Worn seal faces, damaged O-rings | Replace John Crane Mechanical Seal |
Overheating | Dry running, insufficient flush | Check lubrication, adjust flush rate |
Premature Wear | Abrasive particles, misalignment | Upgrade to SiC/SiC faces, realign pump |
Maintenance Tips:
✔ Monthly inspections for leaks and wear
✔ Annual overhauls for critical applications
✔ Flush system optimization for abrasive services
Feature | Type FBD Seal | Conventional Seal |
---|---|---|
Leakage Rate | <3 ml/hr | 10-25 ml/hr |
Pressure Rating | 40 bar (580 psi) | 15 bar (220 psi) |
Temperature Range | -50°C to 250°C | -20°C to 180°C |
Service Life | 3-5 years | 1-2 years |
✔ API 682 & ISO 21049 Certified
✔ NACE MR0175 (H₂S Service)
✔ ATEX & EHEDG Options Available
The Type FBD John Crane Mechanical Seal delivers superior sealing performance in the most demanding industrial applications. Its advanced design, leak-free operation, and extended lifespan make it the preferred choice for critical rotating equipment.
For optimal results:
Select materials matching your process media
Follow OEM installation procedures
Implement condition-based maintenance
Contact our sealing specialists for application-specific solutions!
15 Common Technical Q&As About Type FBD John Crane Mechanical Seal
Q: What makes the Type FBD John Crane Mechanical Seal unique compared to standard mechanical seals?
A: The Type FBD John Crane Mechanical Seal features:
Patented dual-face technology for 99.9% leakage control
Advanced thermal management system
45% longer service life than conventional seals
Reduced energy consumption through optimized face design
2.Q: What pressure and temperature ranges can the Type FBD John Crane Mechanical Seal handle?
A: Standard configurations operate at:
Pressure: Vacuum to 40 bar (580 psi)
Temperature: -50°C to 250°C (-58°F to 482°F)
Special designs available for extreme conditions up to 300°C (572°F).
3.Q: Which materials are recommended for sour gas (H₂S) applications?
A: For sour service, specify Type FBD John Crane Mechanical Seals with:
Faces: SiC/SiC
Metal parts: NACE MR0175 compliant alloys
Elastomers: FFKM or perfluoroelastomers
This combination resists sulfide stress cracking.
4.Q: How do I select the right Type FBD John Crane Mechanical Seal for my pump?
A: Selection requires:
Pump model and operating parameters
Shaft diameter and seal chamber dimensions
Process media characteristics
Required API flush plan
Our engineers provide specific recommendations.
5.Q: What's the typical MTBF in refinery applications?
A: Type FBD John Crane Mechanical 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 frequent thermal cycling in process plants?
A: Yes, Type FBD John Crane Mechanical Seals are designed for:
Temperature swings up to 200°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: Type FBD John Crane Mechanical Seals require:
Monthly visual inspections
Quarterly vibration analysis
Annual comprehensive checks
Unlike conventional seals, they don't need frequent adjustments.
8.Q: How do I troubleshoot premature failure?
A: For early failures:
Check for proper installation (90% of issues are install-related)
Inspect seal faces for unusual wear patterns
Verify process fluid contamination levels
Examine shaft runout and alignment
9.Q: Are special tools required for installation?
A: Basic tools needed for Type FBD John Crane Mechanical Seal installation:
Micrometer for shaft measurement
Alignment gauge
Torque wrench
All necessary tools are provided with the seal.
10.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%.
11.Q: What instrumentation is recommended for monitoring?
A: For Type FBD John Crane Mechanical Seals, we suggest:
Pressure transducers on barrier systems
Temperature sensors at seal faces
Vibration monitors on bearing housings
Leakage detection systems
12.Q: Are these seals suitable for food-grade applications?
A: Yes, we offer FDA-compliant Type FBD John Crane Mechanical Seals with:
Ceramic seal faces
FDA-grade elastomers
CIP/SIP compatibility
Ideal for pharmaceutical and food processing.
13.Q: What's the ROI when upgrading to Type FBD 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.
14.Q: How should spare Type FBD John Crane Mechanical Seals be stored?
A: Proper storage requires:
Original packaging
Climate-controlled environment
Away from ozone/UV light
Annual condition checks
15.Q: What warranty coverage is provided?
A: Type FBD John Crane Mechanical Seals come with:
2-year unlimited mileage warranty
Defect coverage including materials/workmanship
Professional installation requirement
See full terms at [company website].
Key Technical Takeaways:
Proper installation is critical for optimal performance of John Crane mechanical seals
Material selection must match process media characteristics
Regular maintenance prevents unexpected failures
Genuine John Crane parts provide better long-term value
Pro Tip: Implement condition monitoring for your John Crane mechanical seals to detect early warning signs of potential failures. Our smart monitoring systems provide real-time performance data.
Support Services Available:
24/7 technical support hotline
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.