Kingflex
Explore our top-tier range of high-performance closed-cell elastomeric rubber foam sheets, tubes, and specialized cryogenic thermal systems.
Traditional elastomeric foam insulations rely heavily on halogenated flame retardants (chlorine, bromine) to meet strict industrial fire-safety metrics. However, in the event of a fire, halogenated substances release dense, corrosive, and highly toxic gases such as hydrogen chloride (HCl) and hydrogen bromide (HBr). These gases pose direct threats to human life, reduce evacuation visibility, and permanently damage sensitive electronics, electrical servers, and precision laboratory machinery.
China Halogen-Free Insulation Sheet Rolls are engineered using next-generation alternative flame retardants, typically incorporating mineral hydroxides (like Aluminium Trihydroxide, ATH) or phosphorus-nitrogen compound configurations. When exposed to heat, these compounds undergo endothermic decomposition, releasing harmless water vapor and forming a highly dense, non-combustible protective carbonaceous char barrier. This technology ensures the absolute elimination of toxic acid emissions during combustion, aligning with global green building standards like LEED, BREEAM, and WELL.
By operating as a direct energy-saving and environmentally friendly combo enterprise, Kingflex Insulation addresses these modern ecological directives. We combine advanced chemical compounding with high-precision manufacturing to deliver materials that excel in both thermal integrity and environmental safety.
Our engineering formulations represent a significant advancement in elastomeric materials science, offering a unique balance of thermal efficiency and flame retardancy.
Boasting a micro closed-cell structure exceeding 98% uniformity. This high-density barrier dramatically reduces thermal conductivity and blocks moisture ingress, eliminating the risks of corrosion under insulation (CUI).
Formulated without chlorine, bromine, or fluorine. Meets rigorous European toxicity standards (NES 713/EN 45545-2 HL3) for passenger rail, public buildings, cleanrooms, and offshore structures.
Provides structural flexibility with compression resilience exceeding 80%. This prevents physical damage, cracking, or compaction under load, ensuring continuous thermal envelope integrity.
Our engineering insulation materials are tailored to meet localized environmental conditions, installation methods, and strict commercial codes globally.
In microelectronics fabrication and pharmaceutical cleanrooms, outgassing can ruin multi-million dollar production yields. Our halogen-free sheets eliminate outgassing risks while preventing HVAC condensation.
Corrosive marine air demands materials with highly resilient moisture vapor transmission resistance. Our closed-cell formulation prevents moisture from reaching steel piping surfaces, stopping corrosion in its tracks.
For chemical and liquid natural gas (LNG) processes operating down to -196°C, our low-temperature synthetic rubber sheet system provides insulation that prevents ice expansion and stress cracking.
Equipped with state-of-the-art continuous vulcanization and extrusion lines to maintain absolute batch consistency.
Led by eight specialized thermal and chemical engineers driving continuous improvement and new formulations.
Our commitment to rigorous testing ensures that Kingflex halogen-free thermal products meet the stringent expectations of international architects and MEP consultants. Every roll of insulation is continuously monitored through inline laser inspection systems to maintain target density and thickness tolerances.
Our products have successfully passed multiple domestic and international certification programs. These include:
With an annual capacity exceeding 600,000 cubic meters, Kingflex is a designated production enterprise trusted by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China.
Our testing labs verify thermal conductivity, smoke toxicity, dimensional stability, and water vapor transmission rates under strict ISO protocols.
Guarantees thermal performance across hot and cold operating cycles.
Measures smoke density and chemical composition during combustion.
Tests material elasticity, tensile strength, and recovery rates.
Compare physical characteristics and engineering parameters of our standard black rubber foam sheet rolls.
| Material Core | Thickness Scope | Optimal Density | Operating Service Temperature | Closed Cell Value | Resilience Value |
|---|---|---|---|---|---|
| NBR/PVC Copolymer Blend | 6mm to 50mm | 40 - 55 kg/m³ | -40℃ to 105℃ | > 98% | > 80% |
This formulation is designed to meet strict standards for fire safety, thermal performance, and ease of installation in a wide range of commercial environments.
Designed for easy installation over copper and steel pipe runs, providing reliable condensation control and insulation in HVAC, plumbing, and industrial systems.
We deliver verified quality, transparent pricing, and reliable project support to clients worldwide.
Transparent Order Specifications
Quality Checks and Material Approvals
On-time Shipments & Delivery Logistics
Meeting Rigorous Project Requirements
Traceability Documentation & Quality Approvals
Managing global supply chains requires balancing cost, quality, and delivery speed. As a dedicated manufacturer of halogen-free elastomeric insulation products, Kingflex utilizes China's advanced industrial ecosystem to provide several key advantages to our global customers:
Located in Dacheng, China—a hub for green building materials—our facility enjoys direct access to high-grade polymer precursors and specialized eco-safe foaming agents. This localized supply chain keeps raw material costs stable and minimizes production lead times.
Our facility runs five large, fully automated assembly lines, allowing us to manage large production volumes without sacrificing consistency. Automating our processes keeps labor overhead low and ensures uniform physical dimensions across every roll we produce.
We are situated near major container ports, including Tianjin, which simplifies shipping logistics. Our packing methods optimize container volume to protect the material from crushing and reduce shipping costs per cubic meter.
Building codes and safety standards are evolving rapidly worldwide. Project designers are increasingly shifting away from traditional halogen-containing materials for several reasons:
Find answers to common technical, applications, and logistics questions about our elastomeric rubber foam insulation products.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its high flexibility and moisture resistance make it highly effective in complex piping configurations.
Yes, our rubber foam insulation products are fire retardant and meet safety standards for commercial buildings and industrial projects, including BS 476, UL94, and ASTM requirements.
Rubber foam is a flexible, closed-cell material that provides excellent moisture control and prevents condensation, making it ideal for HVAC and cold-service systems. Rock wool is a high-temperature resistant, fibrous insulation that is well-suited for high-temperature industrial steam pipes and structural fireproofing.
Yes, we support OEM/ODM services, allowing you to specify custom thicknesses, widths, densities, and self-adhesive backings to meet project requirements.
Our products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM certifications, ensuring compliance with global environmental and safety standards.
Yes, every production batch is logged with barcode tracking, allowing us to trace raw materials, production line conditions, and QC test records for every shipment.
We produce sheet rolls in thicknesses ranging from 6mm to 50mm, allowing you to select the appropriate thermal thickness to meet condensation-control goals.
Under standard operating conditions and proper installation, our products have an expected service life of 10 to 15 years, maintaining consistent thermal and physical performance over time.
Take a look inside our clean warehouse facilities and modern production lines, where we manage inventory to support reliable global delivery timelines.
Browse our full range of specialty insulation products, including acoustic systems, cryogenic barriers, and high-performance adhesives.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and production departments are located in Dacheng, China—a recognized center for green building materials. As an energy-saving, environmentally friendly enterprise, we focus on the R&D, production, and sales of high-performance elastomeric materials.
In our operations, we prioritize energy saving and consumption reduction. We provide comprehensive thermal solutions through technical consultation, R&D, installation guidance, and dedicated post-sale support, helping to drive standards forward in the global building materials industry.
Kingflex was established by the Jinwei Group, which brings over 40 years of industry experience to our operations. Founded in 1979, the group was the first thermal insulation materials manufacturer established north of the Yangtze River.
Today, our team continues that legacy of service. Our R&D department features 8 professional engineers, supported by 6 international sales representatives and 230 production personnel, working together to deliver reliable service to our clients.