Premium Closed-Cell NBR/PVC and Cryogenic Insulation Products Direct from Kingflex Manufacturing Facilities.
Thermal control of HVAC and mechanical processes is fundamental in minimizing energy waste. In air conditioning and cryogenic piping, choosing the appropriate insulation is vital. Condensation on cold surfaces causes water damage and degradation of thermal properties, while facilitating mold growth. Closed-cell elastomeric rubber foam insulation, composed of a NBR/PVC blend, serves as a moisture barrier with low thermal conductivity, making it preferred over open-cell options like fiberglass or rock wool in sub-ambient configurations.
Global specifications, including BS 476, ASTM E84, and EN standards, require materials with strict flame spread indices and smoke development metrics. Modern HVAC design values materials that maintain thermal stability at temperatures down to -40°C or up to 105°C, ensuring compliance with energy-conservation codes worldwide.
China is a hub for high-performance polymeric foam insulation. Kingflex Insulation Co., Ltd. operates in Dacheng, China, a central location for energy-conserving green building materials. Through advanced automated continuous foaming lines, Kingflex manufactures uniform micro-cellular structures that assure stable thermal performance.
Our localized supply chain reduces raw material volatility for NBR (nitrile-butadiene rubber) and PVC (polyvinyl chloride), allowing us to offer cost-competitive thermal and cryogenic insulation solutions globally. Automated production lines allow Kingflex to process complex bulk orders with short lead times, backed by testing facilities that ensure compliance with RoHS, REACH, UL 94, and CE standards.
A statistical look at our manufacturing footprint and market reach.
Detailed performance parameters for NBR/PVC elastomeric foam sheet rolls and pre-formed pipe insulation.
| Performance Characteristic | Black Rubber Foam Sheet Roll Details | Black Rubber Foam Pipe Details |
|---|---|---|
| Base Material Composition | NBR/PVC Elastomeric Foam Blend | NBR/PVC Elastomeric Foam Blend |
| Product Thickness Range | 6mm to 50mm | 9mm to 40mm |
| Inner Diameter (ID) Range | N/A (Flat Roll Configuration) | 6mm to 114mm (Nominal Pipe Sizes) |
| Volumetric Density Profile | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to 105℃ | -40℃ to 105℃ |
| Thermal Conductivity (λ at 0℃) | ≤ 0.034 W/(m·K) (Micro-cell structure) | ≤ 0.034 W/(m·K) (Uniform foaming) |
| Moisture Resistance Performance | >98% Closed-Cell Rate, low vapor absorption | Closed-cell structure prevents pipe freezing |
| Fire Safety Compliance | Class 1 / Class 0 Fire Retardant, self-extinguishing | Flame retardant, self-extinguishing |
Why mechanical design engineers specify closed-cell elastomeric rubber over fiberglass and rock wool.
Foams evenly and fully with a closed-cell rate exceeding 98%. This micro-cellular structure traps inert gases within cell walls, maintaining low thermal conductivity over long operational lifetimes.
The closed-cell configuration forms an integrated vapor barrier. Low moisture absorption preserves insulation value, preventing pipeline condensation and structural corrosion under insulation (CUI).
Formulated with halogen-free and nitrogenous flame retardants. Meets BS 476 Part 6 & 7 certifications, UL 94 V-0 flame tests, and Class 0 ratings. Self-extinguishes upon flame removal.
Boasts a compression resilience rating over 80%. Its flexible nature simplifies installation around complex pipe elbows, T-joints, and valves, reducing installation labor costs.
Fully compliant with international chemical safety mandates. Contains zero CFCs, HFCs, or HCFCs. Zero Ozone Depletion Potential (ODP) aligns with LEED and BREEAM green building certifications.
Engineered for high resistance to environmental factors, maintaining physical integrity for 10 to 15 years under typical conditions. This durability reduces maintenance and replacement costs.
Where high-performance NBR/PVC elastomeric thermal insulation is installed worldwide.
Used to insulate chilled and hot water pipes, ductwork, and condensate drains. Prevents pipe condensation and drips, which can compromise drywall ceiling panels and indoor air quality.
Provides freeze protection, noise reduction, and thermal efficiency for mechanical piping in hotels, shopping malls, hospitals, office towers, and institutional complexes.
Maintains process temperatures in steam distribution networks, reaction vessels, storage tanks, and heavy machinery rooms. Protects workers from burn hazards on exposed surfaces.
Serves as a thermal barrier for liquid nitrogen lines, cold chain shipping facilities, and maritime transport. Formulated for flexibility at temperatures below freezing.
Its non-fibrous structure prevents particle shedding, making it suitable for cleanrooms, pharmaceutical laboratories, and food and beverage processing facilities.
Withstands environmental degradation, making it suitable for outdoor piping, solar thermal loops, and geothermal heat pumps.
A leading developer of green building materials and thermal insulation systems.
Kingflex Insulation Co., Ltd. is an integrated manufacturing and trading corporation. The company is established by Jinwei Group which has more than 40 years history. Kingway Group is established in 1979, serving as the first manufacturer of thermal insulation materials north of the Yangtze River.
With energy saving and consumption reduction as core principles, Kingflex provides thermal and cold insulation systems. We assist clients from design through installation, offering after-sales technical support. Kingflex employs 8 research and development engineers, 6 international sales managers, and 230 manufacturing workers.
Operating 5 automatic assembly lines, Kingflex maintains an annual production capacity of over 600,000 cubic meters. The company is a designated production enterprise for the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry.
Our production tracking protocols ensure raw material batch numbers are traceable from delivery to final installation. This tracebility supports quality control for critical projects, including petrochemical sites and district cooling networks.
Kingflex products are tested and certified to comply with international regulations.
Explore Kingflex installations across HVAC, mechanical, and petrochemical projects globally.
Photos of our production plants and processing lines.
A record of our communication and project feedback from global procurement partners.
Key checkpoints for international buyers sourcing insulation materials from Chinese factories.
Procuring insulation materials requires verifying compliance with regional specifications. Buyers should assess the following parameters when evaluating potential manufacturers:
A reliable supplier should provide verified test reports (such as ASTM C518 thermal conductivity tests and ASTM E96 water vapor transmission tests) rather than generic specification sheets.
Answers to technical, operational, and logistics queries about Kingflex insulation products.
Specific dimensional standards and target applications for mechanical designs.
Kingflex Standard Dimensions:
Material: NBR/PVC
Thickness: 6mm - 50mm
Density: 40 - 55 kg/m³
Service Temp: -40℃ to 105℃
Applications: Central AC ducts, wall/roof thermal insulation, tank jackets, train carriages, cleanrooms, and chemical processing lines.
Kingflex Standard Dimensions:
Material: NBR/PVC
Thickness: 9mm - 40mm
Inner Diameter (ID): 6mm - 114mm
Density: 40 - 55 kg/m³
Service Temp: -40℃ to 105℃
Applications: Chilled water pipes, AC condensate pipes, heating systems, solar loops, and cryogenic chemical lines.
We provide a full range of energy-saving insulation systems for residential, commercial, and heavy industrial applications.
Complete your mechanical project design with our comprehensive product range.
Specific listings of Kingflex elastomeric and structural insulation options.
A broad array of elastomeric sheet roll configurations to support complex specifications.
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