Engineered elastomeric, closed-cell, and specialized high-density insulation materials for global industrial applications.
Outdoor mechanical piping systems operate under severe stress. Unlike indoor installations, outdoor HVAC infrastructure is subjected to continuous thermal cycling, solar ultraviolet (UV) degradation, moisture entry, and atmospheric contaminants. These elements require a specialized insulation approach: closed-cell elastomeric rubber foam insulation.
For cold piping systems, moisture control is critical. When the pipe temperature drops below the ambient dew point, water vapor naturally migrates toward the pipe wall. Traditional open-fibrous insulation systems rely on external vapor barriers that can fail over time, leading to condensation, loss of thermal resistance ($\lambda$-value degradation), and corrosion under insulation (CUI). Closed-cell structures prevent this by integrating a high water vapor resistance factor ($\mu \ge 10,000$) throughout the material, ensuring long-term thermal efficiency and corrosion protection.
Decades of chemical development, automated supply chains, and large-scale manufacturing capacity at Dacheng.
Dacheng, China is globally recognized as the capital of energy-saving, green building materials. Our manufacturing facility benefits from direct access to raw polymeric materials (NBR, PVC, EPDM, and blowing agents), minimizing raw material transit times, reducing footprint overhead, and ensuring steady production schedules.
We operate 5 high-output automatic assembly lines with an annual capacity of over 600,000 cubic meters. This continuous vertical vulcanization technology ensures uniform cell structure distribution, precise thickness profiles, and consistent density across all sheet rolls and tubes.
Our in-house R&D laboratories test physical performance metrics against major international standards. From ASTM E84 (flame spread / smoke development index) and BS 476 Part 7 to CE (EN 14304) and RoHS/REACH compliance, we ensure our products meet strict regulatory requirements worldwide.
Kingflex elastomeric insulation is formulated from a high-quality blend of nitrile-butadiene rubber (NBR) and polyvinyl chloride (PVC). Under high-temperature extrusion and foaming, it develops a micro-cellular closed-cell structure with a high closed-cell ratio (exceeding 98%).
This high closed-cell ratio minimizes internal air convection and water vapor migration. Its chemical formulation also includes flame retardants that help limit fire propagation in public and commercial buildings.
| Physical / Chemical Property | Reference Test Standard | Designated Performance Metric |
|---|---|---|
| Thermal Conductivity ($\lambda$) | ASTM C518 / ISO 8301 | $\le 0.034 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$ (typical $\lambda \approx 0.032$) |
| Water Vapor Permeability | ASTM E96 / DIN EN 12086 | Water Vapor Resistance Factor $\mu \ge 10,000$ |
| Fire Classification | BS 476 Part 6 & 7 / UL 94 | Class 0 (BS 476) / V-0 Flammability Rating (UL 94) |
| Operating Temperature Range | ASTM C534 | $-40^\circ\text{C}$ up to $+105^\circ\text{C}$ (Cryogenic formulations down to $-200^\circ\text{C}$) |
| Density Profile | ASTM D1622 | $40 \text{ to } 55 \text{ kg/m}^3$ (engineered balance of flexibility & strength) |
| Compression Resilience | ASTM D1056 | $\ge 80\%$ recovery under stress loads |
How our elastomeric formulations perform across different outdoor mechanical systems and climate conditions.
Direct sunlight degrades standard rubbers. For outdoor HVAC piping, Kingflex provides UV-resistant NBR/PVC blends. Adding secondary protective jackets (such as aluminum cladding or polymer skins) helps block UV rays, keeping the core insulation protected from cracking, degradation, and loss of efficiency.
In coastal and high-humidity areas, airborne salts and moisture can speed up the corrosion of copper and steel pipes. Kingflex closed-cell rubber insulation helps block moisture from reaching the pipe surface. This minimizes the risk of Corrosion Under Insulation (CUI) and maintains stable thermal performance.
For cryogenic systems operating at very low temperatures (down to $-200^\circ\text{C}$), standard insulation materials can become brittle and crack. Kingflex offers specialized cryogenic elastomeric formulations that retain their flexibility, absorb thermal contraction, and prevent ice buildup in sub-zero applications.
Our commitment to quality starts with raw material selection and continues through each step of production. The Kingflex R&D team consists of 8 senior chemical engineers who work on improving mechanical properties, flame-retardant performance, and thermal efficiency.
By using automated dosing systems, temperature-controlled mixers, and laser thickness monitors, we reduce variation between production runs. This consistency ensures that the insulation sheet rolls and tubes delivered to your job site match our laboratory specifications.
Independent testing certifies the performance, environmental compliance, and safety of Kingflex insulation systems.
For over 16 years, Kingflex has supplied thermal insulation materials to more than 66 countries. Our materials are used in major public and private construction projects, petrochemical facilities, thermal power plants, and industrial cryogenic installations.
Our quality management system tracks production runs from raw chemical blending to final dispatch. Each shipment is marked with batch identifiers, allowing customers to trace manufacturing dates, physical test results, and raw material inputs.
Key considerations for selecting, purchasing, and shipping large-volume rubber insulation from China.
Elastomeric foam has a high volume-to-weight ratio. We use custom compression packaging techniques to increase shipping container utilization without causing permanent deformation to the cell structure. This helps lower unit ocean freight costs.
Make sure to specify local regulatory requirements when requesting quotes. Whether your project requires ASTM C534 Type I/II grades, BS 476 Class 0 fire ratings, or specific halogen-free profiles, our engineering team can adjust formulations to match.
Proper installation is critical to prevent moisture intrusion. We provide detailed installation manuals, engineering calculations, and adhesive guidelines. We also supply customized adhesive tapes and accessories to ensure a secure, long-lasting seal.
Physical configurations for sheet rolls, tubes, and project applications.
Designed for large-diameter ductwork, equipment housings, and large industrial piping. The flexible sheet roll contours easily to irregular shapes, reducing seam offsets and simplifying installation.
Pre-formed elastomeric pipe insulation designed to fit copper, iron, and steel pipes. It provides consistent insulation thickness and simplifies installation on long pipe runs.
Answers to key technical, engineering, and purchasing questions about elastomeric insulation systems.
Explore our technical catalog of elastomeric, closed-cell, and high-performance insulation products.
Physical configurations for sheet rolls, tubes, and project applications.
Designed for outdoor HVAC chilled water lines. The closed-cell structure helps control heat gain and prevent condensation.
Designed for chemical and industrial environments. This formulation resists acids, alkalis, and atmospheric weathering.
High elasticity allows for easy installation around complex pipe runs, elbows, and valves, reducing installation labor.
Standard NBR/PVC pipe insulation for air conditioning systems, offering reliable thermal performance and UV protection.
A general-purpose elastomeric insulation tube for commercial buildings and plumbing lines.
Designed specifically for HVAC applications, balancing fire safety, thermal performance, and moisture resistance.
Designed for liquid gas terminals and chemical facilities operating at cryogenic temperatures.
Maintains physical stability and thermal performance under extreme cold temperatures.
Engineered to resist cracking and micro-fracturing in sub-zero applications.
Provides thermal performance and moisture control in low-temperature industrial applications.
High-temperature resistant mineral fiber panels for furnace enclosures, exhaust stacks, and fire stops.
Flexible stone wool blankets designed for industrial ovens and high-temperature process piping.
Closed-cell elastomeric sheet rolls for large-diameter HVAC ducts, air handlers, and mechanical equipment.
Highly flexible, elastomeric tube insulation for refrigeration, air conditioning, and domestic plumbing lines.
Discuss your project specifications with our engineering team. We provide calculated recommendations for insulation thickness, UV protection, and logistics configurations.
Get Custom Price Quotes Now
Kingflex