Explore our leading collection of professional elastomeric closed-cell rubber foam, rock wool systems, and advanced sound barriers manufactured for high-stress engineering environments.
Optimized for commercial HVAC duct insulation and general acoustic absorption.
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Prevents icing and surface condensation in complex HVAC/R applications.
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Heavy-duty fireproofing and structural thermal control for heavy industries.
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High density barrier engineered specifically for cryogenic systems and LNG vessels.
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Durable sheet rolls for lining machine rooms, marine bulkheads, and air handling systems.
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Formulated to withstand thermal contraction stresses in sub-zero processing facilities.
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Excellent flexibility makes wrapping complex valves and joints seamless.
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Complete cold insulation system integration designed to prevent thermal bridges.
View SpecificationsAcoustic dampening in commercial infrastructure is no longer just about comfort; it is a critical regulatory and structural compliance requirement. Polyethylene (PE) foam and closed-cell elastomeric rubber foam serve as high-efficiency matrices for sound energy dissipation.
When sound waves strike our closed-cell elastomers, the dynamic structural layout converts acoustic pressure waves into heat energy. This thermal conversion is driven by the compression cycles of the isolated micro-cells, which are optimized at densities ranging from 40 to 55 kg/m³. This structural configuration delivers an optimal Noise Reduction Coefficient (NRC) value while retaining outstanding thermal barrier performance.
Unlike open-cell acoustic materials that are susceptible to environmental moisture infiltration, Kingflex NBR/PVC closed-cell foams maintain a water vapor permeability rating of nearly zero, preventing structural corrosion and moisture-driven bacterial growth.
How the green building revolution and extreme industrial processes are reshaping the market landscape for high-performance sound absorption and thermal barrier technologies.
Air ducts in coastal environments, high-rise office towers, and pharmaceutical cleanrooms rely on elastomeric materials to eliminate mechanical vibration transmission and structural hum while preventing thermal loss.
LNG maritime container vessels and sub-zero chemical storage tanks must remain insulated down to ultra-low temperatures. Our cryogenic rubber foams are engineered to maintain flexibility, preventing thermal shock cracking.
Incorporating elastomeric acoustic boards inside wall assemblies, roofs, and multi-family high-rise floors suppresses impact noise (IIC) and airborne sounds, supporting green building credentials.
Kingflex Insulation Co., Ltd. is a globally integrated manufacturing and trading combo for thermal and acoustic insulation products. Located in Dacheng, China—widely recognized as the green building materials capital—our facility features high-efficiency R&D operations and modern automated production lines.
Established by the Jinwei Group, which has a legacy dating back to 1979, Kingflex represents over 40 years of engineering innovation. As one of the first thermal insulation manufacturers in northern China, we prioritize structural safety, low environmental impact, and verified acoustic metrics.
Today, our facility runs 5 large-scale automatic assembly lines, producing over 600,000 cubic meters annually. This high-capacity output has earned Kingflex designated supplier status from key ministries, including the Ministry of Energy and the Ministry of Chemical Industry.
Every batch of Kingflex NBR/PVC foam is analyzed under rigorous quality control standards. Our R&D unit features 8 dedicated engineers who collaborate with global laboratories to formulate low-conductivity, smoke-suppressed materials. Supported by 6 international sales consultants and 230 factory professionals, we manage production from base compounding through to custom extrusion profiling.
Whether you require standard dimensions or custom OEM adjustments, our team oversees the manufacturing process to deliver materials that comply with international structural safety standards.
Comprehensive physical and chemical performance metrics for Kingflex elastomeric rubber foam sheets and pipelines.
| Material Core Property | NBR/PVC Elastomeric Sheet Spec | NBR/PVC Insulation Pipe Spec | Compliance Test standard |
|---|---|---|---|
| Standard Dimensions | Thickness: 6mm - 50mm | ID: 6mm - 114mm | Thickness: 9mm - 40mm | ISO Standard Dimensions |
| Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ | ASTM D1622 |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·k) at 0°C | ≤ 0.034 W/(m·k) at 0°C | ASTM C518 / EN 12667 |
| Operating Temperature | -40°C to 105°C | -40°C to 105°C | EN 14706 / ASTM C411 |
| Closed Cell Ratio | ≥ 98% | ≥ 98% | ASTM D2856 |
| Fire Behavior Rating | Class 0, Class 1, Self-extinguishing | Flame retardant, self-extinguishing | BS 476 Part 6 & 7 / UL94 V-0 |
| Compression Resilience | > 80% | > 80% | ASTM D1667 |
From complex urban architectural designs to remote oil gas refineries, discover where Kingflex products are deployed to deliver high-performance insulation.
In high-humidity spaces like hotels, commercial centers, and healthcare environments, cold air ducts sweat easily. Applying our elastomeric sheets maintains consistent surface temperatures and prevents moisture accumulation, protecting ceiling structures from water damage.
Managing thermal gradients in low-temperature liquid processing requires flexible, crack-resistant materials. Kingflex cryogenic systems reduce boiling-off rates (BOR) and isolate pipelines from ambient temperatures without cracking under mechanical movement.
Power generation equipment, boiler plants, and processing complexes produce high-frequency vibrations. Installing Kingflex sound-dampening insulation sheets inside machine rooms and enclosure walls helps protect operators and nearby communities.
Looking ahead, the market for insulation systems requires higher thermal efficiency combined with lower carbon footprints. Kingflex is investing in next-generation material science to deliver higher performance with reduced environmental impact.
Zero-emission Production Lines
Transitioning processing machinery to 100% renewable power sources by 2030.
Advanced Acoustic Customization
Providing customized foam densities engineered for specific project frequency targets.
Enhanced Bio-security Integration
Formulating antimicrobial matrices for use in hospital HVAC and food processing plants.
Our commitment to reliable, tested materials is supported by international testing certifications and full batch traceability.
Review actual shipping batches, projects site operations, and verified communications from our international customer base.
We work closely with global procurement officers. Below are verified chat screenshots highlighting project support and customer satisfaction.
Get answers to common technical, regulatory, and mechanical questions about our closed-cell elastomers and structural wool insulation.
Elastomeric rubber foam is principally used for HVAC systems, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and acoustic dampening. Its closed-cell structure prevents moisture ingress, making it highly effective for cold-water lines where condensation control is critical.
Yes. Our insulation materials are formulated with flame retardants. They meet international fire safety criteria, including BS 476 Part 6 & Part 7 (Class 0 / Class 1), and UL94 V-0. The material is self-extinguishing, does not drip fire droplets, and produces minimal smoke.
Closed-cell rubber foam is flexible, highly moisture-resistant, and ideal for HVAC, building envelopes, and cryogenic pipelines. Rock wool, meanwhile, offers high-temperature resistance and is typically used for heavy industrial steam piping, ovens, and structural fire barriers requiring mineral-based protection.
Yes. We provide complete OEM support, allowing modifications to thicknesses, inner diameters, and outer foil facings (such as aluminum cladding or self-adhesive backings) to match specific project designs.
Our products comply with global construction and environmental standards, holding certifications such as CE, REACH, RoHS, UL94, ASTM, and BS 476. This supports compliance for projects in Europe, North America, the Middle East, and Asia.
Yes. Every shipment is tracked with specific manufacturing batch numbers. This ensures that raw materials, processing parameters, and QA test metrics can be verified throughout the supply chain.
We produce sheet rolls and plates in thicknesses ranging from 6mm to 50mm. Thicker configurations can be custom-laminated to meet specific acoustic or thermal requirements.
When installed according to specifications and protected from direct outdoor UV rays (or finished with protective cladding), our elastomeric products offer an operational lifespan of 10 to 15 years, maintaining stable thermal and acoustic performance.
Explore our high-density rubber foam sheets, rolls, and specialized cryogenic line insulation systems.
Industrial-grade sheets designed for machinery housing acoustic wraps.
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Highly flexible roll stock for covering large surface areas on storage vessels.
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High closed-cell density for demanding water vapor barrier applications.
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Specially structured open-cell material for optimized acoustic absorption.
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Cryogenic line wrapping system designed for cold chain and petrochemical plants.
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25mm thick elastomeric sheets designed for thermal and acoustic performance.
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Pre-formed tubular insulation designed for rapid slip-on piping installations.
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Glass mineral fiber blankets engineered for high-temperature and acoustic systems.
View SpecificationsConnect with our engineering sales team to receive comprehensive technical matrices, material certifications, and customized volume pricing for your project requirements.
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