Kingflex
Explore our high-performance NBR/PVC elastomeric thermal insulation sheets and tubes tailored for extreme thermal limits.
Modern building services, mechanical specifications, and industrial systems require not just effective thermal management, but strict safety, visual classification, and environmental sustainability. Our Wholesale Rubber Foam Insulation Sheet Roll in Green Color addresses these multi-dimensional challenges by integrating advanced closed-cell elastomeric chemistry with standardized visual identification systems.
Engineered from high-grade Nitrile-Butadiene Rubber (NBR) combined with Polyvinyl Chloride (PVC) plasticizer, this insulation product offers uniform, micro-cellular air pockets that achieve over a 98% closed-cell rating. The key thermal parameters include an exceptional low thermal conductivity ($\lambda \le 0.034$ W/m·K at 0°C), making it highly efficient at preventing energy loss and surface condensation on refrigeration lines, air ducts, and chilled water pipes.
The application of a distinct green color serves multiple practical functions in large-scale infrastructure projects. It facilitates quick diagnostic inspections in mechanical rooms, visually segregates green building eco-rated HVAC systems, and complies with industry-specific pipeline identification standards (such as domestic or medical water lines, or specific low-velocity ventilation tracks) without needing post-installation painting or jacket labelling.
Kingflex Insulation Head Office & DAC (Dacheng) Research Facility
Leveraging historical manufacturing experience and massive technological infrastructure to optimize procurement costs.
Located in the well-known capital of green building materials—Dacheng, China—Kingflex Insulation Co., Ltd. represents the peak of vertical integration in elastomeric foam production. By controlling raw NBR/PVC polymer sourcing, utilizing high-capacity automated continuous foaming kilns, and managing in-house QA laboratories, we eliminate intermediary markups. Our direct pricing model offers global developers and distributors a sustainable cost-down strategy of up to 25% compared to local regional warehouses.
Kingflex runs 5 massive high-speed automatic assembly lines, generating an annual manufacturing output in excess of 600,000 cubic meters. This immense capacity ensures short lead times even for mega-scale industrial projects. Designated as a key supply contractor by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, our products meet rigorous regulatory inspections globally.
Industrial Heritage (Est. 1979 under Jinwei Group)
Annual Production Capacity
Global Export & Project Footprint
Senior R&D Personnel for Customized Elastomer Blends
Navigating complex international fire codes, environmental certifications, and localized building regulations.
For international procurement departments, material compliance is non-negotiable. Kingflex products undergo continuous testing by world-renowned third-party laboratories. Our green rubber foam sheet rolls and pipes comply with:




Certified by Global Testing Bodies (FM, ISO, BS, SGS)
To reduce import risks for overseas buyers, Kingflex provides localized technical support and clear end-to-end logistics solutions. Our international team of 6 dedicated export specialists coordinates with freight forwarders for rapid customs clearing, shipping, and optimized container packing methods (vacuum-compressed packaging for sheet rolls to lower cubic volume freight costs).
We provide localized engineering support by reviewing local architectural codes (such as Ashrae 90.1, European EN 14304, or Middle Eastern SASO standards) to specify the exact thickness needed to prevent condensation in hot, humid climates.
See how engineers use our green rubber foam sheets across various environments.
Because our green elastomeric foam is fiber-free and dust-free, it is highly suited for pharmaceutical labs and cleanrooms. It does not support bacterial growth, maintaining ultra-clean indoor air qualities (IAQ).
Green buildings (LEED certified) use color-coded insulation sheets to indicate sustainable air flow. The green color serves as a visual confirmation of compliance with eco-friendly design specifications.
Tested at extreme temperatures down to -40℃ and lower, the closed-cell matrix prevents moisture ingress, which causes ice formation and structural failures in conventional open-cell systems.
Our Production Team: 230 Dedicated Professional Technicians
Our employees are outstanding professionals, and together they make Kingflex an innovative manufacturing environment. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service to our clients. Kingflex has 8 professional engineers in our R&D Department, 6 professional international sales specialists, and 230 workers in the production department. This mix of veteran industrial knowledge and active young engineers enables us to quickly resolve technical queries from international contractors.
Direct communication records highlighting our responsive project management and client feedback loops.





Compare architectural grades, dimensional tolerances, and mechanical parameters for precise engineering drafting.
Our green rubber foam sheet rolls are designed for easy application on wide surfaces, HVAC duct wrap, and heavy industrial cylinders.
Engineered for mechanical pipe insulation. High compression resilience ensures no wall thinning at bends and elbows.
| Insulation Type | Material Matrix | Standard Dimensions | Core Technical Advantages |
|---|---|---|---|
| Black Rubber Foam Sheet Roll | Premium NBR/PVC blend | Thickness: 6mm - 50mm Density: 40 - 55 kg/m³ |
1. Foams evenly and fully, closed cell rate over 98% 2. Stable long-term thermal conductivity 3. Compression resilience over 80% 4. Flame retardant, self-extinguishing 5. Low thermal conductivity, high moisture resistance |
| Black Rubber Foam Insulation Pipe | Premium NBR/PVC blend | Thickness: 9mm - 40mm ID: 6mm - 114mm |
1. Professional pipe spraying equipment ensures even coating 2. Excellent compression resilience > 80% 3. Reduces pipe freezing and cracking risks 4. Low thermal conductivity with high moisture resistance index |
Continuous testing processes ensure every batch meets international project guidelines.



Our materials are integrated into critical infrastructure, high-rises, and industrial facilities globally.








From heavy cryogenic barriers to high-temp rock wool solutions, we supply complete industrial insulation systems.
Providing thermal and cryogenic insulation solutions designed for large-scale operations.
Kingflex runs 5 large automatic assembly lines, producing over 600,000 cubic meters annually. Certified by the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry, we support high-demand construction schedules with reliable bulk delivery.
We supply thermal insulation, cold insulation, and noise reduction solutions for buildings and industries globally. Our team supports design engineers, HVAC contractors, and international procurement agencies with specialized mechanical systems assistance.
Technical answers directly from our R&D and supply chain team.
Select from our range of high-performance NBR/PVC elastomeric thermal insulation sheets and tubes tailored for extreme thermal limits.