Explore our high-performance closed-cell elastomeric rubber foam insulation rolls, ultra-low temperature cryogenic series, and standard-compliant thermal pipe jackets engineered for industrial applications.
In modern construction and industrial engineering, HVAC thermal insulation acts as the primary barrier against environmental thermal drift. With the tightening of global building energy standards (such as ASHRAE 90.1, LEED, and BREEAM), selecting materials with minimal thermal conductivity (λ ≤ 0.034 W/(m·K)) is imperative. Minimizing structural heat gain or loss translates directly to a lower carbon footprint and substantial lifetime operating savings.
Cold-fluid conduits, chilled water pipes, and VRF (Variable Refrigerant Flow) refrigerant lines operating below ambient dew points are perpetually vulnerable to moisture condensation. Unmitigated moisture leads to "Corrosion Under Insulation" (CUI), insulation deterioration, structural rot, and structural microbial mold issues. A closed-cell elastomeric system acts as a built-in water vapor barrier, preserving thermal properties over decades of operation.
Moving to petrochemical and pharmaceutical processing, cryogenic systems demand insulation capable of operating at extreme lows—extending down to -200 °C. Materials like NBR/PVC must maintain flexibility and resist structural micro-fracturing from severe thermal cycles, showing the need for specialized elastomeric low-temperature configurations.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research development and production department is situated in the well-known capital of green building materials in Dacheng, China.
Originating from the prestigious Jinwei Group (Kingway Group) established in 1979, we inherit a rich lineage of technical prowess. As the first manufacturer of thermal insulation materials north of the Yangtze River, we possess over 40 years of manufacturing experience. We operate with the core philosophy of energy saving and consumption reduction.
We provide comprehensive solutions across insulation consultation, R&D production, installation guidance, and post-sale service. We continue to lead the development of the global building materials industry.
Our NBR/PVC elastomeric rubber foam insulation products are designed to deliver long-term thermal resistance and reliable vapor barrier performance.
Kingflex materials are tested and certified to comply with strict international regulatory bodies, including BS 476 (Class 0 & Class 1), CE, REACH, RoHS, UL94, and ASTM standards. This ensures compatibility with complex building codes in North America, Europe, the Middle East, and Asia.
| Product Class | Standard Dimensions | Key Physical Properties |
|---|---|---|
| Black Rubber Foam Sheet Roll |
Thickness: 6mm–50mm Density: 40–55 kg/m³ |
• Temp Range: -40℃ to 105℃ • Closed-cell rate > 98% • High moisture resistance factor |
| Black Rubber Foam Insulation Pipe |
Thickness: 9mm–40mm Inner Diameter (ID): 6mm–114mm |
• NBR/PVC composition • Flexible, compression resilience > 80% • Even coating extrusion |
| Cryogenic Insulation Series | Multi-layered configuration optimized for deep temperature systems. |
• Temp range down to -200 °C • Prevents thermal shock cracking • Integrated vapor-barrier design |




Operating in Dacheng, China, the global hub of green building products, offers major logistics and raw material advantages. Kingflex runs 5 high-speed, fully automated assembly lines. This continuous extrusion and foaming process minimizes manual error and guarantees product density consistency across thousands of cubic meters.
Our specialized pipe spraying technology applies coatings evenly to the outer walls of our elastomeric sleeves, providing consistent resistance against external physical wear and UV degradation.



Innovation is at the core of our operations. The Kingflex R&D department features 8 professional engineers focused on optimizing elastomer blends.
Supported by 6 international sales specialists and 230 trained production workers, our team manages communication and product delivery for complex global HVAC and industrial cold insulation projects.
Our thermal insulation systems are deployed in demanding engineering settings, providing reliable temperature control and noise reduction.
Modern skyscrapers rely on multi-split VRF/VRV layouts. These systems run refrigerant lines at high temperature variations through building plenums. Kingflex elastomeric tubes prevent condensation drippage, protecting plasterboard ceilings and structural elements from water damage.
In liquid nitrogen, LNG, and ethylene production, temperatures drop below -150 °C. Standard insulation materials can freeze, crack, and fail under these conditions. Our cryogenic elastomeric line provides flexible insulation that prevents ambient heat gain and protects critical pipeline systems.
Plant rooms, heavy ventilation systems, and steam pipelines require noise reduction as well as thermal control. Kingflex sound absorption thermal sheets combine thermal insulation with acoustic dampening in a single layer.




Choosing the right insulation requires analyzing material density, water absorption, operating temperatures, and installation requirements.
| Material Type | Cellular Structure | Moisture Vulnerability | Best Application Area | Installation Speed |
|---|---|---|---|---|
| NBR/PVC Elastomeric Foam | Closed-cell (>98%) | Highly resistant; acts as a built-in water vapor barrier. | HVAC, refrigeration, VRF systems, chilled water lines. | Fast; highly flexible sheet and pipe sleeves. |
| Rock Wool Insulation | Open fiber matrix | Vulnerable; requires an external vapor jacket to prevent mold/rust. | High-temperature industrial steam lines, furnace walls. | Medium; requires careful joint sealing and protective gear. |
| Glass Wool Insulation | Fiber-mesh layout | Highly porous; wet fibers lose thermal insulating properties. | Large building wall cavities, standard air ducts. | Requires external foil jackets and physical protection. |
Real-time feedback and order coordination screenshots demonstrating our transparent service delivery for global EPC buyers, procurement managers, and commercial distributors.
A visual tour of our plant showing the stages from raw compounding and vulcanization to packaging, product labeling, and container loading.












Compare our specialized line of elastomeric pipe jackets, aluminum-foil coated rolls, soundproof backing sheets, and industrial rock wool insulating solutions.
Our automated facility processes bulk orders for distribution to global port networks, ensuring quality standards are maintained from raw material stages to cargo loading.











