High-performance elastomeric pipe and board products engineered for thermal efficiency and anti-condensation.
Closed-cell elastomeric insulation represents a pinnacle of modern thermal physics applied to building materials. Unlike traditional open-cell fiber products (like rock wool or fiberglass), Nitrile Butadiene Rubber (NBR) combined with Polyvinyl Chloride (PVC) forms an impervious, highly structured matrix of millions of independent micro-cells. These cells trap air, which has a very low thermal conductivity ($\approx 0.026 \text{ W/(m}\cdot\text{K)}$), preventing convective currents within the material itself.
This molecular configuration delivers an exceptionally low structural thermal conductivity (represented as $k$-value or $\lambda$-value). At $0^\circ\text{C}$, the material achieves $\lambda \leq 0.034 \text{ W/(m}\cdot\text{K)}$. More importantly, the high resistance to moisture vapor transmission ($\mu \geq 10,000$) eliminates the need for separate vapor barriers. In humid commercial HVAC or cryogenic setups, condensation is the primary driver of thermal degradation: every $1\%$ moisture ingress by volume increases the thermal conductivity of mineral fibers by up to $15\%$. Closed-cell NBR completely circumvents this hazard, ensuring stable thermal shielding for years.
"By integrating premium nitrile rubbers with precise PVC co-polymer chains during chemical expansion, the resulting sheets demonstrate a cell closure rate exceeding 98%. This physical structure prevents moisture vapor migration, maintaining structural insulation integrity under extreme relative humidity."
Globally, energy conservation is no longer optional; it is mandated. Industrial manufacturing and building systems account for over $40\%$ of global energy consumption, a significant portion of which is lost through thermal dissipation in piping and ventilation networks. High-density elastomeric rubber rolls provide crucial thermal isolation, directly aligning with LEED, BREEAM, and DGNB green building frameworks.
By effectively mitigating heat gain in chilled water systems and heat loss in hot water processes, Kingflex elastomeric systems optimize chiller and boiler operational efficiency. The flexibility of the sheet and tube formats allows for rapid, secure installation around complex valves, tees, and flanges, eliminating cold bridges. Furthermore, the material dampens structural sound and vibrations, significantly reducing acoustic resonance inside sheet-metal ducts in airports, hospitals, and high-density office towers.
To support mechanical engineers in system specification, the physical properties of Kingflex NBR/PVC elastomeric structures are maintained within precise margins:
| Physical Property | Testing Standard | Performance Value |
|---|---|---|
| Thermal Conductivity (at 0°C) | ASTM C518 / ISO 8301 | ≤ 0.034 W/(m·k) |
| Water Vapor Permeability | ASTM E96 / BS EN 12086 | μ ≥ 10,000 (Vapor Barrier Built-In) |
| Fire Performance Rating | BS 476 Part 7 Class 1 / UL 94 V-0 | Compliant / Self-extinguishing |
| Smoke and Flame Index | ASTM E84 | Flame Spread < 25 / Smoke Developed < 50 |
| Vacuum Water Absorption | ASTM C209 | ≤ 2.0% |
Over 40 years of engineering leadership, driving innovations in closed-cell elastomeric manufacturing.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for high-performance thermal insulation products. Headquartered in Dacheng, China—widely recognized as the capital of green-building materials—we operate as a specialized, energy-saving, and environmentally friendly enterprise. Our capabilities encompass basic R&D, mass production, export logistics, installation consultancy, and comprehensive post-sale technical support.
We operate under a clear mandate: energy conservation and consumption reduction. Through strategic product engineering and raw material optimization, Kingflex leads development in the building materials industry. Established by the Jinwei Group, which boasts over 40 years of industrial history since its foundation in 1979, Jinwei was the first manufacturer of thermal insulation materials north of the Yangtze River. Today, this heritage translates into robust manufacturing protocols and advanced material formulations.
Our workforce forms the backbone of our operation: Kingflex has 8 professional R&D engineers, 6 international sales specialists, and 230 skilled production technicians, ensuring consistent product quality across all batches.
Kingflex Industrial Production Campus in Dacheng, China
Designed for extreme physical durability, thermal stability, and safety across major modern industries.
Excellent for insulating chilled water lines, ventilation air ducts, and domestic water pipelines. Its high vapor resistance prevents structural condensation and dripping water damage in ceiling cavities.
Engineered to insulate process piping, bulk tanks, and heat exchangers. Retards ambient heat transfer, reduces overall energy waste, and provides external corrosion protection under insulation (CUI).
Specially formulated rubber compounds remain flexible and thermal-conductive resistant down to extreme sub-zero temperatures. Prevents icing and thermal stress failures in cryo-loops.
Modern building codes enforce rigorous test procedures for smoke toxicity and flame propagation. Kingflex NBR foam sheets are engineered to comply with multiple major international building standards. Crucially, our products are certified under BS 476 (Fire tests on building materials and structures), UL 94 (Standard for Tests for Flammability of Plastic Materials), CE, REACH, RoHS, and ASTM standards. This verification guarantees low flame spreads and minimal smoke generation in the event of building fires.
Additionally, our production plants run advanced quality tracking protocols. From raw elastomeric inputs to final foam density checks, we operate full batch traceability. This tracking provides municipal contractors, mechanical engineers, and global distributors with complete assurance of performance consistency across every shipment.
BS 476, CE, REACH, & UL94 Certification Records
Kingflex insulation sheets and pipes are deployed in over sixty-six countries across multi-scale infrastructure developments, district energy hubs, high-purity cleanrooms, and petrochemical complexes. Our project files showcase performance and installation success in demanding conditions—from high-humidity maritime regions to arctic-temperature LNG facilities.
These real-world installations validate our laboratory test results. By maintaining low structural thermal conductivity and excellent moisture resistance under mechanical stress, Kingflex products successfully prevent structural condensation and lower operational energy consumption in high-traffic commercial systems.
On-Site Installation of Kingflex Elastomeric Materials
The next generation of clean elastomeric materials and eco-friendly thermal barriers.
As international construction codes prioritize green building components, the insulation industry faces three key engineering transitions. Kingflex's R&D team actively drives these changes through our advanced product development program:
Transparent global business and supply chain tracking from our Chinese production lines to overseas sites.
Consistent material supply and logistics coordination for large-scale construction schedules.
Answers to common engineering questions regarding the application and design of elastomeric insulation.
Explore our complete range of flexible tube and board configurations engineered for global distribution.
Reference index of our standard manufacturing formats and stock items.
Proper packaging is critical to protect elastomeric rolls from compression damage during transport. Kingflex materials are packed in heavy-duty polyethylene bags or cardboard boxes. This packaging prevents physical tearing and keeps moisture or dust from settling on the material surface before installation.
Each container is packed to maximize volume utilization while avoiding excessive compression, which can damage the closed-cell structure. By utilizing direct shipping lines from Chinese ports, Kingflex ensures efficient delivery times for projects worldwide.
Container loading of Kingflex NBR foam rolls
Kingflex