Table of Contents
Introduction
In the world of industrial ventilation, HVAC systems, and machinery, flexible duct connectors are indispensable components. They serve as the critical “flexible joints” that absorb vibration, compensate for misalignment, and dampen noise between ductwork, fans, and equipment.
Among the various materials available, silicone-coated fabric, neoprene fabric, and PVC fabric stand out as the three most popular choices. Selecting the wrong one can lead to premature failure, safety hazards, and costly downtime.
This comprehensive guide will help you understand the strengths, weaknesses, and ideal applications of each material—so you can make the right choice for your system.
Key Takeaway:
The optimal flexible duct connector depends on operating temperature, chemical exposure, mechanical stress, and budget. Choosing the right material ensures safety, durability, and long-term performance.
Fabric flexible duct connector
Head-to-Head Comparison: Material Breakdown
To make an informed decision, let’s compare the three most common flexible duct connector materials across key performance factors.
1. Silicone Fabric Duct Connectors
Temperature Range
-70°C to +260°C (-94°F to +500°F)
Ideal for extreme heat or cold environments.
Chemical & Environmental Resistance
Excellent resistance to UV, ozone, and many chemicals. Outstanding weathering performance.
Mechanical Properties
High flexibility, strong tear resistance, and long service life even under thermal stress.
Typical Applications
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Hot air & gas exhaust
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Welding fume extraction
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Engine test systems
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High-temperature filtration
Cost Consideration
Highest cost, but unmatched performance in extreme conditions.
2. Neoprene (Chloroprene) Fabric Duct Connectors
Temperature Range
-40°C to +120°C (-40°F to +250°F)
Chemical & Environmental Resistance
Excellent resistance to oils, grease, weather, and mild chemicals. Naturally flame-retardant.
Mechanical Properties
Very durable, abrasion-resistant, and elastic. Performs well under vibration.
Typical Applications
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Kitchen exhaust systems
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Spray booths
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Industrial ventilation
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Oil mist environments
Cost Consideration
Mid-range pricing with excellent overall value.
3. PVC Fabric Duct Connectors
Temperature Range
-10°C to +70°C (14°F to 158°F)
Chemical & Environmental Resistance
Resistant to water and mild acids; not suitable for oils or strong solvents.
Mechanical Properties
Lightweight and flexible but may stiffen over time, especially in cold conditions.
Typical Applications
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General HVAC
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Light dust collection
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Low-temperature air handling
Cost Consideration
Most economical choice for standard applications.
Comparative Summary Table
| Feature | Silicone | Neoprene | PVC |
|---|---|---|---|
| Temperature Range | –70°C to +260°C | –40°C to +120°C | –10°C to +70°C |
| Chemical Resistance | Excellent | Excellent (oil) | Moderate |
| Durability | Excellent | Very Good | Good |
| Cost | High | Medium | Low |
| Best Use | High-temp systems | Industrial use | General HVAC |
Application of flexible duct connector
How to Choose the Right Connector for Your Application
Step 1: Identify the main challenge
Heat? Chemicals? Oil? Budget?
Step 2: Match material to environment
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High temperature → Silicone
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Oil, grease, outdoor use → Neoprene
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Standard airflow & low cost → PVC
Step 3: Consider secondary factorsÚ
Pressure, vibration, fire rating, and movement frequency.
Conclusion
There is no universal “best” flexible duct connector—only the best option for your specific application.
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Silicone offers unmatched performance in extreme temperatures
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Neoprene provides excellent all-around durability
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PVC delivers cost-effective performance for light-duty use
Choosing the right material improves system reliability, reduces maintenance, and lowers long-term operating costs.
Call to Action
Not sure which material is right for your project?
Our technical team can help you select or customize the perfect flexible duct connector based on your operating conditions.
📩 Email: [email protected]
🌐 Website: www.siliconcoatedfabric.com
📄 Free samples & technical datasheets available upon request
