Kingflex
Engineered high-performance elastomeric foam systems manufactured under rigorous global quality standards.
As global energy efficiency directives tighten, industrial and commercial HVAC systems demand increasingly robust insulation materials. Elastomeric foam insulation has emerged as the premier solution for preventing condensation, minimizing thermal transfer, and dampening acoustic transmission across diverse settings.
Engineered from synthetic elastomer matrices—principally Nitrile Butadiene Rubber (NBR) combined with Polyvinyl Chloride (PVC)—this material features a uniform, highly concentrated closed-cell structure. By trapping air in millions of micro-cells, it provides excellent thermal insulation, while its low water absorption rate ensures long-term performance even in challenging, humid environments.
Whether controlling heat gain on HVAC chilled water systems or managing cryogenic temperatures in liquid hydrocarbon processes, elastomeric foam plays a key role in reducing carbon emissions and protecting industrial assets.
Modern engineering projects operate across regional boundaries, requiring materials that comply with international safety, energy, and environmental standards. Our elastomeric solutions are designed to satisfy these global benchmarks:
From the high-ambient humidity of Southeast Asia to the cold regions of Northern Europe, our closed-cell technology provides reliable condensation control, preventing moisture ingress that can lead to corrosion under insulation (CUI) and compromise system integrity.
Our formulation achieves a closed-cell rate exceeding 98%. This high concentration of individual cell walls resists water vapor transmission, eliminating the need for separate vapor barriers in most applications.
Backed by decades of experience within the Jinwei Group (founded in 1979), Kingflex Insulation Co., Ltd. continues to advance manufacturing techniques in Dacheng, China.
Established by the Jinwei Group, we were among the earliest thermal insulation manufacturers in Northern China, providing a foundation for our current technical capabilities.
Operating 5 automated assembly lines, our facility is recognized by national energy and chemical ministries for high-volume, consistent production.
Our products are exported to over 66 countries, supported by international sales departments and an engineering R&D group of 8 dedicated specialists.
Understanding the engineering metrics and chemical performance profile of Kingflex Elastomeric Materials.
| Property Metric | NBR/PVC Elastomeric Rubber Foam | Cryogenic Grade Systems | Testing Methods Standard |
|---|---|---|---|
| Operating Temperature Range | -40°C to +105°C | -200°C to +125°C | ASTM C534 / EN 14706 |
| Thermal Conductivity (λ) | ≤ 0.034 W/m·K (at 0°C) | ≤ 0.031 W/m·K (at -100°C) | ASTM C177 / EN 12667 |
| Water Vapor Permeability (μ) | ≥ 10,000 | ≥ 20,000 | ASTM E96 / EN 12086 |
| Density Range | 40 - 55 kg/m³ | 60 - 80 kg/m³ | ASTM D1622 |
| Fire Behavior / Rating | Class 0 & Class 1, UL94 V-0 | Flame Retardant, Low Smoke | BS 476 Part 6/7, UL 94 |
| Compression Resilience | ≥ 80% recovery | High density resilience | ASTM D1056 |
Our insulation products use a optimized NBR/PVC ratio. NBR (Nitrile-butadiene rubber) provides elasticity and oil resistance, ensuring flexibility at low temperatures. PVC (Polyvinyl chloride) enhances flame retardancy and resistance to atmospheric aging, ozone, and UV radiation.
By vulcanizing these raw components into a uniform cell structure, we achieve a material that resists degradation under common environmental and mechanical stresses.
Proven performance across major energy, industrial, and commercial projects globally.
Designed for dust-free environments, including pharmaceuticals, hospitals, and microelectronics facilities, where fibrous shedding must be avoided.
Our material is fiber-free and resistant to mold growth, meeting severe indoor air quality requirements.
Specialized cryogenic elastomeric insulation handles extreme temperatures down to -200°C. Typically specified for liquid natural gas (LNG) terminals and chemical processing piping.
Designed to manage high thermal shock and mechanical contraction at low temperatures.
Large chilled-water distribution systems in district cooling networks face high ambient heat. Our closed-cell pipe insulation helps prevent condensation and energy loss over long pipeline distances.
Our production facilities maintain compliance with global quality and safety standards. Kingflex products carry approvals from international testing organizations, including:
We work closely with global design institutes and mechanical contractors to supply materials for demanding specifications. Key project phases include insulation thickness calculations to prevent condensation based on ambient relative humidity and temperature.
Kingflex continues to invest in material science to improve thermal performance and sustainability. Our current R&D is focused on three main developmental tracks:
By incorporating nano-additives into the raw rubber block, we aim to reduce cell sizes, which can lower thermal conductivity values at standard temperatures.
Our research includes developing fire-retardant elastomeric formulations without halogenated additives. This helps meet strict non-toxic smoke regulations in marine and transit applications.
We are investigating the use of bio-based elastomer precursors to reduce the carbon footprint of our manufacturing process, supporting global decarbonization goals.
We provide full product traceability, from raw chemical compound validation through curing to final packaging, supporting quality verification on-site.
Every batch undergoes testing for density, cell morphology, fire rating, and thermal conductivity prior to shipping.
Proper installation is essential for maintaining the performance of closed-cell elastomeric foam insulation systems.
Ensure all pipe and duct surfaces are clean, dry, and free of rust or scale. Surfaces should be cleaned with an appropriate solvent before applying adhesives.
Use contact adhesives formulated specifically for NBR/PVC elastomeric foams. Apply adhesive evenly to both surfaces and allow it to dry to a tack-free state before bonding.
Always install elastomeric tubes and sheets under slight compression rather than tension. Stretched material can pull apart at seams over time, compromising the vapor seal.
Explore our range of NBR/PVC sheets, rolls, and industrial mineral wool insulation products.
Technical and logistical insights from our engineers.
