Premium elastomeric technology engineered to combat extreme relative humidity and prevent thermal bridge losses in Southeast Asian macro climates.
Indonesia's geographical location presents unique HVAC and structural preservation challenges. With average ambient relative humidity values hovering between 80% and 95% throughout the year, and temperatures routinely exceeding 30°C, the thermal dew point remains consistently high. Standard open-cell or fibrous insulation materials, such as fiberglass or rockwool, are prone to moisture ingress. When water vapor enters fibrous structures, their thermal conductivity ($k$-value) rises exponentially, leading to complete insulation failure, severe pipe condensation, corrosion under insulation (CUI), and toxic indoor mold growth.
To address this, Kingflex Closed-Cell NBR/PVC Rubber Foam Insulation Sheet Rolls provide an impermeable vapor barrier. Boasting a water vapor diffusion resistance factor ($\mu$) exceeding 7,000 to 10,000, our material ensures long-term, stable thermal conductivity. This guarantees optimal performance in central AC ducting, chilled water lines, cleanroom facilities, and petrochemical industrial sites across the Indonesian archipelago.
For systems operating in high humidity environments, the minimum insulation thickness required to prevent condensation can be calculated using:
t = λ × (T_ambient - T_pipe) / (h_out × (T_ambient - T_dewpoint))
Our engineering department provides custom sizing calculators calibrated to standard Indonesian operating points:
Comprehensive physical properties of Kingflex NBR/PVC closed-cell elastomeric rubber foam sheets and rolls engineered for international standards compliance.
Our sheet rolls are engineered to line large HVAC rectangular ducts, big tanks, and heavy industrial piping. They are available with optional high-performance acrylic self-adhesive backing and reinforced aluminum foil facing for high mechanical abuse resistance.
| Parameters | Value / Performance Range |
|---|---|
| Material Composition | Premium Nitrile Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) Blend |
| Density Range | 40 - 55 kg/m³ |
| Thickness Options | 6mm, 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Service Temp Limit | -40°C to +105°C (Flexible down to -200°C for Cryogenic grade) |
| Thermal Conductivity | ≤ 0.034 W/m·k at 20°C | ≤ 0.032 W/m·k at 0°C |
| Fire Performance | Class 0 (BS 476 Part 6 & 7), UL94 V-0, ASTM E84 Class A |
Designed for fast installation on copper and steel pipes, maintaining structural integrity on complex elbows, tees, and valves without thermal leakage.
| Parameters | Value / Performance Range |
|---|---|
| Inner Diameter Range | 6 mm to 114 mm (Fits standard HVAC copper tubing & schedule pipes) |
| Wall Thickness Range | 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm |
| Compression Resilience | Over 80% recovery after standard deflection testing |
| Moisture Absorption | Vacuum absorption ≤ 2% (by weight) |
| Fungal & Bacteria | Excellent resistance - zero growth detected under ASTM testing |
| Acoustic Damping | Significant structure-borne sound reduction (transmission loss) |
Established as a strategic manufacturing business unit of the renowned Jinwei Group, which has a production heritage dating back to 1979 (the pioneer of thermal insulation north of the Yangtze River), Kingflex has grown into a leading global provider of high-efficiency insulation systems.
Integrating research, manufacturing, global supply logistics, and post-sales installation guidance, Kingflex takes energy efficiency as its primary focus. From our state-of-the-art facility in Dacheng, China, we operate 5 large-scale automated assembly lines. We maintain an annual production capacity exceeding 600,000 cubic meters of elastomeric foam, serving as a key supplier for national-scale energy, chemical, and municipal projects.
Our production department consists of 230 highly skilled workers, supported by 6 international logistics coordinators and an 8-engineer R&D department focused on low-density foaming technology, extreme-temperature chemistry, and eco-friendly fire retardants.
To supply high-performance, energy-saving insulation systems that reduce global carbon emissions, lower building operating costs, and protect vital industrial piping infrastructure.
Equipped with modern chemical laboratories, we specialize in enhancing raw rubber formulations to improve fire behavior (limiting toxic smoke toxicity) and lower thermal conductivity values.
Our raw materials are strictly screened to meet international environmental regulations, ensuring safety in cleanrooms, pharmaceutical hubs, and high-occupancy public areas.
Kingflex materials undergo third-party certification testing to ensure full compliance with regulatory requirements across international and Indonesian industrial zones.
ISO 9001:2015 Certification
FM Approved Standards
BS 476 Class 0 Rating
CE & ASTM Compliance
All Kingflex products conform to CE, REACH, RoHS, UL94, and ASTM guidelines, ensuring full traceability across our production cycle.
Custom application profiles of our rubber foam systems in various climate zones and industrial sectors across the region.
Our Class 0 rubber foam rolls help developers meet Jakarta green building codes by minimizing energy waste in central air conditioning chilled water lines, preventing condensation leaks inside suspended ceilings.
Providing specialized multi-layered systems for low-temperature processes at major terminals, including Tangguh and Bontang, preventing gas boil-off and protecting metal piping from stress fractures.
Our low-density NBR PVC rolls are fiber-free and dust-free, making them suitable for electronic assembly lines in Cikarang industrial estates, preventing contamination in controlled environments.
Our solutions have been field-tested in complex engineering environments, including high-performance HVAC systems, commercial towers, and industrial pipeline networks.
Direct communication and technical approvals from international procurement specialists, verifying the quality and reliability of Kingflex products.
The primary mode of failure in tropical insulation systems is the absorption of atmospheric moisture. NBR/PVC closed-cell structures present an engineered distribution of microscopic closed cells. Because the cells are self-contained and not interconnected, moisture cannot travel through the core thickness of the material.
Under standard testing conditions, Kingflex materials achieve a vapor transmission rating of $\mu \ge 10,000$. This means water vapor is blocked from reaching the cold surface of steel pipes, preventing the formation of condensation and protecting the system from Corrosion Under Insulation (CUI).
Additionally, NBR/PVC features chemical resistance to oils, greases, acids, and alkalis, making it suitable for chemical plants in Cilegon and industrial parks across Java.
Building safety regulations in Indonesia (including PU regulations and local safety codes) mandate fire retardancy for construction materials. Kingflex NBR/PVC insulation sheet rolls incorporate fire retardant additives during compounding. When exposed to flame, the material creates a carbonaceous char layer that insulates the substrate and restricts flame spread.
Our products achieve a Class 0 rating under British Standard BS 476 (Parts 6 & 7), as well as a V-0 rating under UL 94. They are self-extinguishing and generate low levels of smoke, helping to maintain visibility and safety in egress pathways during a fire event.
Standard and specialized product options available for industrial projects, commercial HVAC systems, and cold chain distribution centers across Indonesia.
Expert answers addressing the design, installation, and performance of closed-cell elastomeric insulation in humid tropical climates.
Get in touch with our technical sales division to receive dynamic thickness calculation models, customized pricing schedules, and physical samples delivered to your offices in Indonesia.
Kingflex