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Description:
Withstands temperatures up to 435°C
Outstanding mechanical strength and long service life
Excellent thermal insulation and air-leak sealing performance
Resistant to chemicals, solvents, and corrosion
Easy to install, strong adhesion on metal surfaces
Helps duct systems operate more stable and quieter
Parameter:
| Product code | RON-03 |
Duct sealing gasket is a specialized material used in HVAC systems to seal duct joints, prevent air leakage, and withstand high temperatures. In particular, fiberglass-reinforced gaskets rated up to 435°C are widely used for metal duct systems, silencers, exhaust fans, and equipment operating in harsh environments.
A duct gasket (also called a duct sealing strip) is a thermal-insulating and airtight material applied at duct joints, flanges, or collars.
Ensures airtight sealing and prevents pressure loss in the system
Reduces vibration and noise during airflow operation
Protects against dust and moisture, extending equipment lifespan
Withstands high temperatures, suitable for boilers, plant rooms, and high-temperature environments
Heat-resistant fiberglass core: cross-woven, durable, withstands temperatures up to 435°C
High-temperature adhesive layer: resistant to pressure, does not melt or peel under heat
Protective surface coating: water-resistant, oil-resistant, and resistant to mild chemicals
Produced according to international standards such as IEC 61067:1991, GE (USA), and Niboto (Japan), ensuring strong mechanical durability and airtight sealing performance.
| Property | Specification |
| Fiber Structure | Cross woven, 4–6 mm |
| Operating Temperature | -60°C to 435°C |
| Working Pressure | 150 bar |
| Standard Width | 20 mm, 25 mm |
| Thickness | 3 mm |
| Roll Length | 30 m / roll |
High temperature and pressure resistance
Chemical and solvent resistant
Excellent thermal and acoustic insulation
High mechanical strength, long-term dimensional stability
Effective waterproofing and air-leak prevention
| Criteria | EPDM Rubber | Fiberglass Heat-Resistant | Silicone Technical |
| Temperature Range | -40°C to 120°C | -60°C to 435°C | -60°C to 250°C |
| Airtightness | Good | Very good | Very good |
| Heat Resistance | Medium | Very high | High |
| Elasticity | Very good | Lower | Good |
| Chemical Resistance | Medium | Good | Very good |
| Mechanical Strength | High | Very high | Medium |
| Thermal / Acoustic Insulation | Good | Excellent | Good |
| Suitable Environment | Residential HVAC, offices | Industrial plants, boilers, high heat | Clean rooms, high-seal areas |
| Cost | Low | Medium | High |
EPDM Rubber Gasket: Suitable for residential HVAC, offices, and commercial buildings with stable temperature conditions.
Fiberglass Heat-Resistant Gasket: Ideal for harsh environments requiring high heat, pressure, and vibration resistance — factories, smoke exhaust, industrial ducts.
Silicone Gasket: Best for hygienic environments requiring chemical resistance and dust-free sealing — clean rooms, electronics, pharmaceutical, and food industries.
Sealing metal duct joints, fan flanges, FCU/AHU boxes
Used for supply air, return air, smoke exhaust, and ventilation ducts
Applied at high-pressure, vibration, or high-temperature locations
Oil & Gas / Chemical: prevents gas leakage, withstands solvents and high heat
Power / Thermal plants: sealing heat exchangers, boilers, hot air ducts
Food & Medical: hygienic, heat-safe, non-toxic
Improves airtightness and reduces energy loss
Reduces vibration and operational noise
Corrosion and mild chemical resistant
Protects fans, dampers, and HVAC equipment from heat exposure
Long service life: 5–10 years depending on operating conditions
Choose width and thickness based on duct size and system pressure
Use fiberglass or ceramic fiber for high-temperature zones
For normal ventilation, EPDM or foam gasket may be sufficient
Clean duct surface before application
Apply gasket evenly along flange or joint line
Use heat-resistant adhesive or rivets if required
Avoid overstretching or overlapping excessively to prevent air leakage
Fiberglass high-temperature duct gasket is an essential material for both industrial and commercial HVAC systems, ensuring airtight sealing, vibration reduction, thermal insulation, and extended equipment lifespan. With heat resistance up to 435°C, strong mechanical durability, and chemical resistance, it is the optimal solution for demanding environments such as commercial buildings, chemical plants, power stations, and clean rooms.
