Direct factory product offerings manufactured under ISO certified facilities utilizing advanced NBR/PVC chemical compounds.
The global elastomeric thermal insulation market is witnessing structural shifts driven by rigorous energy conservation codes and building decarbonization mandates. Nitrile rubber (NBR/PVC) foam has emerged as the definitive material choice for modern HVAC/R systems, chilled water lines, process piping, and acoustic damping arrays. Characterized by its closed-cell formulation, this synthetic rubber co-polymer matrix prevents moisture ingress and condensation, which are key drivers of Corrosion Under Insulation (CUI).
In massive HVAC projects across North America, Europe, and Asia-Pacific, design engineers prioritize materials that sustain thermal barrier integrity while maintaining low chemical emissions (Low VOC). The thermal conductivity of elastomeric foam remains incredibly stable, ensuring long-term system efficiency and lowering structural operating budgets.
Furthermore, the growth of the cold-chain logistics market—essential for food distribution and pharmaceuticals—demands heavy-duty piping systems insulated with cryogenic and sub-ambient materials. Traditional rock wool or fiberglass lack the innate vapor barrier properties required for low-temperature applications, creating a natural market pull toward flexible elastomeric foam tubes.
As sustainability certificates like LEED, BREEAM, and DGNB dictate global building design criteria, procurement directors must source certified, traceable, and zero-ozone depleting potential (ODP) insulation products from reliable manufacturing partners.
An in-depth structural review of NBR/PVC properties explaining why elastomeric closed-cell structures outperform fibrous insulation.
An exceptional thermodynamic molecular structure allows for thermal conductivity ratings as low as 0.034 W/m·K at 0°C. This significantly restricts heat transfer and saves HVAC system power cycle operating costs.
With an even and fully foamed structure (closed-cell rate exceeding 98%), the material possesses high moisture resistance, rendering external foil facing optional except in extreme outdoor environments.
Formulated with premium flame retardants, Kingflex elastomeric foam achieves Class 0 and Class 1 standards (BS 476), UL94 V-0 ratings, and self-extinguishes, producing minimal toxic fumes.
| Property Parameter | NBR/PVC Elastomeric Sheet Roll | NBR/PVC Elastomeric Insulation Pipe |
|---|---|---|
| Standard Thickness | 6mm - 50mm | 9mm - 40mm |
| Inner Diameter (ID) | N/A (Flat sheet/roll structure) | 6mm - 114mm |
| Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Limit | -40℃ to +105℃ | -40℃ to +105℃ |
| Compression Resilience | >80% recovery rate | >80% recovery rate |
| Water Vapor Permeability | Stable, high resistance coefficient | Even micro-cellular distribution |
Kingflex Insulation Co., Ltd. represents a professional manufacturing and trading combo optimized for global thermal insulation product supply. Our core research, development, and primary production divisions are strategically situated in Dacheng, China—historically recognized as the capital of green-building materials.
As an energy-saving and environmental-friendly enterprise, we concentrate on the complete lifecycle of thermal protection systems. From initial structural consultation and product R&D down to post-installation feedback, we work closely with engineering design firms and corporate procurement divisions globally to minimize energy loss.
Kingflex was established by the Jinwei Group, which boasts over 40 years of industry history. Established originally in 1979, Jinwei Group pioneered the research and production of modern thermal insulation systems north of the Yangtze River.
Leveraging this legacy, Kingflex has modernized its capabilities by building automated assembly lines, adopting cutting-edge vulcanization chambers, and establishing a professional testing center ensuring structural compliance for large infrastructure works.
Today, Kingflex operates five large, fully-automated continuous assembly lines. This infrastructure delivers an annual production capacity exceeding 600,000 cubic meters, allowing us to serve major global supply programs simultaneously.
We are a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, validating the quality of our material output in critical national infrastructure projects.
Our R&D division hosts 8 professional senior material engineers dedicated to compound optimization, acoustic control development, and cryogenic insulation systems.
Analyzing specific engineering environments where elastomeric insulation delivers superior performance compared to mineral wool or fiberglass.
Prevents condensation on commercial building chilled water lines, fan coil units, and central duct systems, protecting structural ceilings from water damage.
Maintains sub-ambient temperature stability for refrigerant pipelines in shipping, cold-storage warehouses, and specialized temperature-sensitive containers.
Offers corrosion resistance for petrochemical pipes, chemical supply lines, and industrial reactors, preventing corrosion under insulation (CUI).
The micro-cellular structure dampens mechanical vibration and airborne sound transmission in high-density machine rooms, ventilation ducts, and HVAC shafts.








Kingflex insulation products conform to major international engineering standards, verified by independent testing laboratories.
To support global supply programs, Kingflex products hold certificates including BS 476, CE, REACH, ROHS, UL94, and ASTM. This ensures compliance with structural codes, building regulations, and environmental limits in markets worldwide.
Our raw material sourcing is controlled and documented, enabling complete batch traceability from raw elastomer polymerization down to final foam tube extrusion.
Transparent communications demonstrating real-time quality assurance feedback and procurement coordination with global buyers:





Dimension Profile: Thickness ranges from 6mm to 50mm. Designed primarily for flat surfaces or large diameter pipelines. Supplied with optional self-adhesive mesh backings or aluminum foil facing for high ultraviolet (UV) exposure locations.
Dimension Profile: Thickness ranges from 9mm to 40mm. Inner diameters span 6mm to 114mm. Engineered to slide directly over standard copper, steel, and carbon piping networks before final connection joints.

















Review our core line of elastomeric foam tubes, cryogenic insulation wraps, and specialist rock wool blankets.
A collection of engineering questions and solutions regarding nitrile foam installation, performance characteristics, and testing protocols.
Direct factory product offerings manufactured under ISO certified facilities utilizing advanced NBR/PVC chemical compounds.