Engineered for global HVAC, mechanical piping, and cryogenic systems.
In modern industrial and commercial infrastructure design, HVAC systems represent a major share of total energy expenditure. Outdoor installations, particularly exterior duct networks, are subject to extreme atmospheric variables. These include intense UV radiation, wide temperature fluctuations, wind-driven moisture, and corrosive pollutants. Protecting these systems requires materials engineered to resist moisture penetration and thermal transfer.
Our closed-cell elastomeric nitrile-butadiene rubber (NBR/PVC) insulation serves as a high-density thermal barrier. Unlike open-cell products, which absorb water and experience thermal degradation, our material features an integrated vapor barrier. With an even closed-cell distribution exceeding 98%, it prevents the moisture migration that leads to corrosion under insulation (CUI) and energy loss.
By preventing moisture ingress, these materials maintain stable thermal performance. They protect exterior HVAC systems from thermal fluctuations, ensuring consistent operating efficiency and lower overhead costs for commercial facilities globally.
Positioned within the global green building materials industrial capital of Dacheng, China.
Kingflex Insulation Co., Ltd. operates 5 large automatic assembly lines, generating an annual capacity exceeding 600,000 cubic meters. This scale allows us to handle large-scale commercial orders, ensuring shorter lead times and consistent product quality.
Originally established under the Jinwei Group, which has more than 40 years of manufacturing history since 1979, we are a key supplier in Northern China. This long history ensures reliable processes, deep material expertise, and solid supplier networks.
Our manufacturing processes and products are certified to international standards. We maintain full traceabilities with official certifications, including BS 476, CE, REACH, ROHS, UL94, and ASTM.
Our workforce is key to our consistent quality standards. The Kingflex R&D team consists of 8 professional engineers who focus on improving material thermal properties and fire-retardant chemistry. The international trade division features 6 specialized sales representatives, coordinating logistics and customs for export deliveries.
Our team works closely with industrial designers and EPC contractors from project design through delivery. By providing clear technical advice and installation guidance, we ensure projects meet engineering specifications and long-term performance targets.
Technical parameters for Kingflex NBR/PVC elastomeric rubber foam materials.
| Performance Properties | Reference Standards | Recorded Specifications |
|---|---|---|
| Material Base | ASTM D1667 | Nitrile-Butadiene Rubber & Polyvinyl Chloride (NBR/PVC) Elastomeric Foam |
| Thickness Ranges | Factory Standards | 6mm to 50mm (Insulation Sheets & Rolls) | 9mm to 40mm (Insulation Tubes) |
| Apparent Density | ASTM D1622 | 40 to 55 kg/m³ |
| Thermal Conductivity (λ) | ASTM C518 / ISO 8301 | ≤ 0.034 W/m·K at 0°C | ≤ 0.036 W/m·K at 20°C |
| Moisture Resistance Factor (μ) | BS EN 12086 | ≥ 10,000 (Highly resistant to water vapor transmission) |
| Service Temperature Limits | ASTM C534 | -40°C to 105°C (Up to -200°C with custom cryogenic configurations) |
| Fire Reaction Rating | BS 476 Part 7 / UL94 | Class 1 / Class 0 Fire Rating, Self-Extinguishing, Low Smoke Generation |
Industrial sourcing requires balancing costs, material specifications, and logistics. For international projects, working directly with a primary manufacturer in China can lower procurement costs while ensuring consistent quality standards.
At Kingflex, we offer custom manufacturing to meet specific project needs. We support OEM requests, allowing clients to order insulation sheet rolls or tubes with custom thicknesses (from 6mm to 50mm) and specific density profiles tailored to local climates.
We work with international logistics providers to ensure timely shipping. With a production facility in Dacheng, we have direct access to Northern China's shipping corridors, allowing us to manage transport schedules and deliver materials on time.
Testing facilities and R&D processes ensure all products meet global construction and industrial safety standards.
Ongoing thermal analysis verifies K-value performance across our product range, supporting energy efficiency in HVAC applications.
Testing ensures our materials meet fire safety regulations, including BS 476 and UL94 standards for self-extinguishing performance.
We monitor the cellular structure of our foam to maintain a closed-cell rate above 98%, protecting against moisture penetration.
Our manufacturing and quality systems are certified by major international testing bodies.
Documented communications showing technical validation and order fulfillment support for international buyers.
We work closely with global engineering networks to supply custom insulation systems. The chat documentation above illustrates our direct response processes, technical reviews, and shipping support.
These communications help us coordinate shipping schedules, handle customs documentation, and verify technical requirements before delivery. This keeps project timelines on track and supports consistent quality across our product lines.
Each batch of rubber foam insulation roll or pipe is assigned a production serial number. This enables traceability from raw materials through processing to final inspection.
Our quality control processes help us maintain consistent material standards. This gives engineering teams and project managers reliable performance metrics for their insulation systems.
Demonstrated project installations of Kingflex elastomeric materials globally.
Designed for large flat surfaces, rectangular air ducts, and large-diameter processing equipment. Our sheet rolls provide continuous thermal protection and resistance to moisture.
Specifically extruded to slip over copper, steel, or plastic pipelines, preventing condensation and heat loss in HVAC and plumbing systems.
Industrial, commercial, and cryogenic insulation systems installed worldwide.
The global insulation market is shifting toward materials with lower environmental impact and improved thermal efficiency. Our NBR/PVC elastomeric foam is manufactured using processes that avoid halogenated blowing agents and ozone-depleting materials, supporting green building certification systems like LEED.
Current industrial design trends favor systems that combine insulation with protective cladding. Outdoor HVAC systems are exposed to weathering and animal activity. By specifying high-density elastomeric materials with UV-resistant coatings or aluminum jackets, designers can extend system service life to 10–15 years.
In addition, the growth of the LNG and cryogenic markets requires materials designed for extreme cold. Our specialized cryogenic foam formulations are designed to remain flexible and prevent stress cracking at temperatures down to -200°C.
Our insulation materials are designed for use across multiple sectors:
Select the appropriate insulation category for your project specifications.
Flexible, closed-cell elastomeric foam sheets, rolls, and pre-formed tubes. Designed to prevent condensation and thermal transfer in HVAC, plumbing, and industrial refrigeration systems.
Explore NBR/PVC Products →Fibrous glass insulation materials designed for high-temperature ducts and walls. Provides thermal performance and acoustic control in commercial building applications.
Explore Glass Wool Products →High-density stone wool boards and blankets. Designed for high-heat environments and industrial process piping, providing fire protection and structural stability.
Explore Rock Wool Products →Technical guidance and sourcing information for engineers and procurement managers.
Connect directly with our engineering and estimating departments for custom product quotes and design advice.
Additional closed-cell elastomeric and specialized industrial insulation products.
Packaging standards protect materials during shipping and storage.
Kingflex