Kingflex
Engineered rubber foam technologies designed to exceed global environmental, safety, and operational standards.
Nitrile Butadiene Rubber (NBR) blended with Polyvinyl Chloride (PVC) forms the backbone of modern elastomeric closed-cell insulation. The thermodynamic effectiveness of our supreme nitrile rubber sheet rolls and tubes stems from an intensive polymer cross-linking manufacturing process. By sealing millions of micro-cells containing dry gas, we restrict air movement and drastically minimize convective, conductive, and radiative heat transfer.
For systems handling cold substances, humidity poses a major challenge. Standard materials often absorb moisture, causing a decline in thermal efficiency. Kingflex systems tackle this issue with a high vapor diffusion resistance (μ-factor ≥ 10,000). The closed-cell structure acts as a built-in vapor retarder, ensuring reliable performance even in high-humidity conditions without requiring extra vapor jackets.
Every batch of Kingflex supreme nitrile rubber insulation undergoes strict laboratory validation to comply with global regulatory metrics.
| Property | NBR/PVC Sheets (Standard) | NBR/PVC Pipes | Cryogenic Custom Grade |
|---|---|---|---|
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0 °C | ≤ 0.034 W/(m·K) at 0 °C | Custom engineered down to cryogenic ranges |
| Operating Temp. Range | -40 °C to +105 °C | -40 °C to +105 °C | Down to -200 °C (LNG applications) |
| Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ | 50 - 75 kg/m³ |
| Moisture Resistance (μ) | ≥ 10,000 | ≥ 10,000 | ≥ 15,000 |
| Fire Safety Standards | BS 476 Part 7 Class 0/1, UL94 V-0 | BS 476 Class 0, UL94 V-0, ASTM E84 | Special low-smoke, high-temp flame retardant |
Our formulations exclude halogenated paraffin and formaldehyde to support compliance with green building requirements. We integrate specialized antimicrobial compounds into our polymer matrix, inhibiting mold growth on ductwork and piping inside sensitive facilities like cleanrooms and medical labs. The flexibility of our NBR/PVC blend ensures it fits snugly around complex piping shapes without cracking under mechanical stress.
Founded by the Jinwei Group, which traces its manufacturing legacy back to 1979 as the pioneer of insulation north of the Yangtze River, Kingflex Insulation Co., Ltd. represents the absolute pinnacle of high-volume supply capability in Dacheng, the green building materials hub of China. We bridge the gap between large-scale cost efficiencies and high precision.
Our facility features 5 automated, continuous vulcanization lines. With an annual capacity of over 600,000 cubic meters, we serve as a designated production partner for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China. This industrial backing guarantees access to top-tier raw materials, enabling us to offer competitive pricing on bulk shipments to Europe, the Americas, and Southeast Asia.
Meeting regional architectural standards is critical to avoid installation delays and code failures.
Our nitrile insulation products carry full certification including BS 476, CE, REACH, RoHS, UL94, and ASTM. This guarantees smooth customs clearance and strict compliance with local building codes worldwide.
Whether handling high humidity in tropical APAC regions or extreme freezing conditions in Northern Europe, our engineering department provides tailored calculations for insulation thickness, preventing condensation issues.
We maintain full chemical and structural batch-to-batch traceability. This documentation is essential for demanding oil, chemical, and aerospace industrial projects.
From deep-freeze cryogenic storage to commercial HVAC ventilation networks.
For temperatures down to -200 °C, thermal efficiency is critical. In LNG piping, standard elastomeric systems can turn brittle and leak. Kingflex cryogenic solutions use multi-layered NBR formulations that maintain flex and absorb expansion and contraction movements.
In humid air-conditioned spaces, sweating pipes can cause structural damage and indoor air quality issues. Our closed-cell rubber sheet rolls prevent moisture entry, keeping thermal performance stable over a lifespan of 10 to 15 years.
Chemical processing requires robust insulation to protect pipes from corrosion under insulation (CUI). Kingflex supreme nitrile rubber resists mild acids, bases, and oils, serving as a dual barrier for chemical resistance and thermal control.
The insulation industry is shifting toward materials with lower environmental impact and higher performance. Our R&D center focus on developing zero-VOC emission foams to improve indoor air quality and meet modern green building certifications like LEED and BREEAM.
We are also working to optimize flame retardants for better performance. Our newer foam combinations are designed to reduce smoke opacity and toxicity in fire scenarios. This improvement is crucial for high-occupancy public areas such as hospitals, airports, and modern rapid transit tunnels.
Our testing facilities verify material performance, from physical density checks to fire retardancy tests.
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