Discover our core wholesale product catalog featuring industrial-grade elastomeric closed-cell sheets, tubes, and specialized cryogenic insulation blankets.
The global demand for high-grade closed-cell elastomeric foams, generically categorized under industrial brand types like Ensolite, has surged exponentially. Industrial expansion, stringent emission regulations, and the continuous growth of high-precision HVAC systems are rewriting the market landscape. Chemically formulated through composite polymerization of Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC), these specialized foams represent the zenith of thermal barrier efficiency and thermodynamic control.
On a macro scale, the industrial sector relies heavily on NBR/PVC closed-cell profiles due to their remarkable resistance to moisture vapor permeation, zero ozone depletion potential (ODP), and high fire safety performance indicators. In regions across North America, Europe, and Asia-Pacific, structural transitions toward eco-conscious, zero-energy construction have mandated the inclusion of low thermal conductivity materials (λ ≤ 0.035 W/m·K at 0°C) across public utilities and high-density industrial systems.
The cellular structures contain isolated nitrogen pockets preventing structural convective heat flow, offering phenomenal thermal resistance properties.
Boasting a highly resilient moisture resistance factor, it mitigates Corrosion Under Insulation (CUI) risks in high-humidity applications.
Certified in meeting top fire retardancy ratings (BS 476 Part 7 Class 1, UL94 V-0, ASTM E84) required for modern aerospace, marine, and urban building codes.
Our history, production capability, and expert research teams define our industry-leading stance in environmental energy conservation.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex research development and production department is located in the well-known capital of green building materials in Dacheng, China. It is an energy-saving, environmentally friendly enterprise concentrating on research, development, production, and sales.
In operation, Kingflex takes energy saving and consumption reduction as the core concept. We provide insulation solutions by means of consulting, research & development, production, installation guidance, and post-sale service to lead the development of the global building materials industry.
Established by the Jinwei Group, which has more than 40 years of history (established in 1979), Kingway Group was the first manufacturer of thermal insulation materials north of the Yangtze River, representing a foundational cornerstone in China's industrial green material growth.
Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service to our clients. Kingflex has 8 professional engineers in our R & D Department, 6 professional international sales specialists, and 230 workers dedicated to manufacturing within our production facilities.
At present, our production capabilities have certified Kingflex as a designated production enterprise authorized by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry of the People's Republic of China.
Our industrial-grade black rubber foam sheets and pipelines are formulated for wide temperature tolerances and mechanical resilience.
| Parameters | Specifications |
|---|---|
| Material Composition | Premium NBR/PVC Elastomeric Blend |
| Thickness Range | 6mm - 50mm |
| Core Density | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ (Special Cryogenic options available) |
| Closed-Cell Rate | Over 98% for excellent thermal insulation |
| Compression Resilience | Over 80% |
| Flame Retardancy | Self-extinguishing off fire |
| Parameters | Specifications |
|---|---|
| Material Composition | Premium NBR/PVC Elastomeric Blend |
| Thickness Range | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Core Density | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ |
| Structure Advantages | Even foaming, closed-cell, pipe spraying protection |
| Frost Mitigation | Greatly reduces pipe freezing and cracking risks |
Providing integrated solutions of thermal insulation, cold insulation, and noise reduction for buildings and heavy industries.
Heat and thermal insulation for large-scale air ducts, chilled/hot water pipelines, and condensation control systems in commercial structures.
Integrated insulation for walls, roofs, basements, and acoustic dampening panels for multi-story residential and hospitality projects.
Specialized flexible low-temperature containment systems to preserve liquified natural gases and prevent extreme thermal loss.
Thermal insulation, environmental corrosion mitigation, and acoustic damping for high-risk chemical processing plants.
Precision thermal barriers for rail transport cars, shipping containers, and sub-zero storage facilities globally.
UV-resistant rubber foam configurations for high-efficiency solar water heating systems and high-temperature exterior piping.
Our continuous development is backed by standard-tested methodologies and international compliance certificates.




Our commitment to security, quality, and sustainability has allowed Kingflex to acquire global validation parameters. Our elastomeric foam insulation materials have successfully met the qualifications for:




Providing clear documentation, custom client communication, and reliable supply solutions for international business partners.













Visualizing our raw material processing, automated line extrusion, and extensive warehouse reserves.












As standard regulatory policies prioritize zero-emission manufacturing systems, our research team is shifting toward bio-based elastomers and eco-friendly physical blowing agents. The next-generation Ensolite foam solutions target a drastic reduction in Global Warming Potential (GWP) and carbon footprint values without sacrificing fire retardancy or moisture barrier properties.
Furthermore, as smart energy grids emerge, integrating moisture-sensing indicators directly into elastomeric structures presents a major technological development. This allows early detection of Corrosion Under Insulation (CUI) without the labor-intensive removal of the foam sheets. We continue to invest in automated continuous-extrusion processes that maximize thermal stability while ensuring high flexibility at extremely low cryogenic temperatures.
Read our detailed technical answers regarding elastomeric NBR/PVC closed-cell foam applications, specifications, and fire standards.
Further selections of our industrial rubber foam line, tailored for HVAC piping systems, heavy equipment, and cold-storage operations.