Explore our highly specified range of elastomeric sheets, tubes, and specialty composite materials direct from our factory.
Kingflex Insulation Co., Ltd. stands as a premier manufacturing and trading combo for high-specification thermal insulation products. Headquartered in Dacheng, China—the recognized global capital of green building materials—our enterprise is dedicated to energy conservation, environmental sustainability, and precision thermal control. Our legacy spans over four decades under the parent company, Jinwei Group (established in 1979), which pioneered commercial thermal insulation manufacturing north of the Yangtze River.
We approach thermal engineering through the lens of comprehensive systems integration. We do not merely manufacture products; we consult, research, innovate, formulate, and support our clients from initial engineering design through post-installation verification.
Understanding the micro-structural optimization that yields low thermal conductivity and permanent water vapor resistance.
Our black rubber foam features a closed-cell structural density of over 98%. This high concentration of microscopic, gas-filled cavities eliminates the risk of convective heat transfer within the material body and forms a highly resistant barrier against moisture vapor penetration.
At a mean temperature of 0°C, the thermal conductivity ($\lambda$) of Kingflex elastomeric foam remains exceptionally low ($\le 0.034$ W/m·K). This property reduces radiative and conductive energy losses in high-pressure HVAC systems, chilled lines, and hot water piping.
Unlike open-cell materials or fibrous rock wool, our rubber foam does not require an external protective foil to prevent moisture accumulation. The high resistance factor ($\mu \ge 10,000$) ensures that the material's insulation value remains stable over its 10-15 year lifespan.
| Physical / Chemical Property | NBR/PVC Elastomeric Foam Value | Relevant Testing Standard |
|---|---|---|
| Density Range | 40 - 55 kg/m³ | ASTM D1622 / GB/T 6343 |
| Thermal Conductivity ($\lambda$) | $\le 0.034$ W/(m·K) at 0°C / $\le 0.036$ W/(m·K) at 20°C | ASTM C518 / ISO 8301 |
| Water Vapor Permeability Resistance ($\mu$) | $\ge 10,000$ (Moisture-proof factor) | BS EN 12086 / ASTM E96 |
| Fire Performance & Flammability | Class 1 / Class 0, Self-Extinguishing, Low Smoke | BS 476 Part 7 / UL 94 V-0 / ASTM E84 |
| Service Temperature Limit | -40°C to 105°C (-40°F to 221°F) | EN 14706 / ASTM C534 |
| Compression Resilience | $\ge 80\%$ recovery rate | ASTM D1056 |
| Environmental Compliance | Ozone Depleting Potential (ODP) = 0, Low VOC | REACH, RoHS, LEED Certified |
Cubic Meters Annual Capacity
Industrial Heritage Since 1979
Export Countries & Regions
Automated Production Lines
Detailed mechanical parameters for engineers, architectural specifiers, and procurement managers.
Designed primarily for large-diameter ducts, vessels, tanks, and irregular piping surfaces. The continuous roll design reduces joints and optimizes thermal sealing.
Even expansion profile, closed-cell rate >98%, superior sound attenuation in mechanical chambers, and self-extinguishing flame properties.
Optimized for structural copper, steel, and plastic HVAC piping systems. Delivers condensation prevention and anti-freezing protection on chilled water lines.
Precision internal diameter sizing ensures snug fitment over copper piping, dramatically minimizing localized air gaps and system thermal bridges.
Ensuring consistent quality through standard laboratory validation, continuous automatic production monitoring, and third-party certifications.
Kingflex maintains strict compliance protocols to ensure seamless deployment in highly regulated markets including North America, the EU, the Middle East, and Southeast Asia. Our materials are subject to batch-wise traceability from raw polymer inputs to post-cured sheet rolls.
Deciphering industrial procurement pathways, raw material volatility, and high-volume factory direct pricing models.
Wholesale prices of black rubber foam insulation are determined by density parameters, thickness customization, and base polymer costs (Nitrile and PVC raw indexes). Purchasing direct from a manufacturer reduces auxiliary trading margins by up to 20-30%, which is critical for large-scale infrastructure projects.
To optimize ocean freight expenses, rolls and tubes are packed in heavy-duty polybags or custom cartons to prevent mechanical compression during shipping. We supply directly in 20GP or 40HQ container quantities to reduce unit transport costs.
For industrial LNG and refrigeration infrastructure, standard elastomeric rubber foam may require modified cryogenic formulations. Kingflex specialized cryogenic rubber foam remains flexible down to -200°C without cracking, maintaining structural thermal barriers.
With an annual output of 600,000 cubic meters, Kingflex is a certified supplier to major global EPCs (Engineering, Procurement, and Construction firms). Our location in the Dacheng green building materials district provides us with direct logistial linkages to major Chinese container ports like Tianjin and Qingdao, allowing for quick international dispatch.
Where Kingflex thermal systems are deployed to protect infrastructure, prevent corrosion under insulation (CUI), and cut HVAC carbon footprints.
Eliminating condensation on chilled water pipes and supply ducts prevents indoor moisture damage and organic mold growth in commercial offices, hospitals, and transit hubs.
Engineered NBR formulations exhibit outstanding resistance to oils, chemicals, and environmental weathering, preventing structural degradation in harsh refining environments.
Combining open-cell and closed-cell layers reduces mechanical resonance and airborne noise propagation inside equipment rooms, fan-coil units, and generator enclosures.
Provides long-term thermal containment for long-distance buried chilled water piping networks, reducing operational costs for municipal cooling stations.
Our parent company, Jinwei Group, was founded in 1979 as the first modern thermal insulation manufacturer north of the Yangtze River. Decades of specialized focus on industrial insulation materials paved the way for the formation of Kingflex Insulation Co., Ltd. Today, this combined expertise allows us to provide reliable products that meet the dynamic standards of the thermal science sector.
Our engineering team includes 8 dedicated R&D specialists, supported by a production workforce of 230 technicians. Together, we focus on improving closed-cell structures, optimizing flammability performance, and developing halogen-free, environmentally friendly compounds.
Actual field installations, product warehouse storage, and raw material processing stages from our facilities.
Actual procurement chats and customer feedback verifying product performance and shipping timelines.
How our team is planning to meet upcoming international environmental and performance regulations.
To address indoor air quality concerns in modern green buildings, our R&D team is working to eliminate halogenated flame retardants, shifting toward eco-friendly phosphorus-nitrogen systems that minimize smoke toxicity.
We are testing the integration of bio-based monomers derived from plant oils into the NBR polymer matrix. This approach aims to reduce carbon footprints without compromising cell structure or thermal resistance.
Developing composite systems that combine elastomeric layers with heat-reflective metallic films to handle severe mechanical stresses and higher service temperatures.
Technical and logistics questions regarding Kingflex elastomeric systems answered by our engineering group.
Engineered thermal systems and insulation accessories available for bulk global procurement.
Actual processing steps from our advanced automated warehouse pipelines.
Detailed physical variants of our elastomeric rubber foams and high temperature rock wool materials.
Contact our engineering and sales department today to request samples, customize dimensional specifications, or receive an updated factory direct pricelist.
Kingflex
