Explore our elite selection of high-performance elastomeric rubber insulation systems optimized for high fire resistance and low thermal conductivity.
In modern building design and heavy industrial processing, thermal efficiency and safety compliance are not negotiable. Class 0 Pipe Insulation represents the gold standard for elastomer-based thermal management. Specifically engineered to meet rigorous national and international fire building codes (such as BS 476 Part 6 and Part 7), Class 0 certification guarantees that the material possesses high flame-retardant performance and minimal heat release rates.
Worldwide, urbanization and industrialization have spurred tremendous demand for high-efficiency HVAC/R systems, cryogenic fluid networks, and petrochemical pipeline transport. Uninsulated or poorly insulated pipelines lead to massive energy waste and trigger the destructive phenomenon of Corrosion Under Insulation (CUI) due to condensation buildup. The use of advanced NBR/PVC closed-cell elastomeric foam acts as an absolute vapor barrier, mitigating energy leaks and maximizing structural longevity.
As governments enforce stricter environmental laws, global manufacturers are focusing on zero-ODP (Ozone Depletion Potential) and low-GWP (Global Warming Potential) options. This transition highlights the critical role of Class 0 materials, which deliver superior fire protection without releasing toxic halogenated compounds during a thermal event.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex's state-of-the-art research development and production hub is situated in the well-known capital of green building materials in Dacheng, China. We are an energy-saving, environmentally friendly enterprise concentrating heavily on research, development, production, and sales.
Established by the Jinwei Group, which boasts more than 40 years of history, Kingflex builds upon a legacy of insulation mastery. The Jinwei Group was established in 1979, serving as the first manufacturer of thermal insulation materials north of the Yangtze River. Across four decades, our foundational goal has remained clear: to provide the global building and industrial sector with premium energy-saving insulation systems.
Today, Kingflex takes energy saving and consumption reduction as its core concept. We deliver global building materials solutions through pre-installation consultation, custom R&D production, installation guidance, and post-sale services.
Under the microscope: Why NBR/PVC elastomeric foam outstrips standard insulation media in thermal resistance, flame retardancy, and vapor sealing.
Elastomeric foam is highly valued for its microcellular closed-cell design. Kingflex products boast an even, dense foam structure with a closed-cell rate exceeding 98%. This tiny micro-bubble network prevents airflow, locking in a low thermal conductivity rate ($\le 0.035 \text{ W/(m}\cdot\text{K)}$ at $0^\circ\text{C}$). Unlike open-cell fibers, closed-cell rubber requires no separate vapor barrier, making it immune to moisture intrusion.
| Performance Characteristic | Kingflex Standard Spec (NBR/PVC) | Industrial Rock Wool / Fiberglass | Engineering Benefit |
|---|---|---|---|
| Material Composition | NBR/PVC Elastomeric Blend | Fibrous Mineral / Glass Wool | Flexible installation, zero dust shedding, skin-friendly |
| Closed Cell Rate | > 98% | Open structure (< 5%) | Prevents moisture penetration, keeps thermal performance stable |
| Thickness Range | 6mm - 50mm (Customizable) | 25mm - 100mm | Optimizes spatial footprint in narrow pipeline shafts |
| Density | 40 - 55 kg/m³ | 60 - 150 kg/m³ | Lightweight, reduces load strain on suspended piping |
| Service Temperature Range | -40℃ to 105℃ | 0℃ to 650℃ | Excels in dual-temperature, chilled water, and cryogenic lines |
| Fire Safety Rating | Class 0 / Class 1 (BS 476) | Non-combustible Class A1 | Self-extinguishes, prevents flame spread along walls/ceilings |
Automatic Assembly Lines
Annual Production Capacity
Exporting Countries Globally
Production Experts & Workers
At present, Kingflex runs 5 large automatic assembly lines. Our annual production capacity exceeds 600,000 cubic meters, making us a designated production enterprise chosen by China's Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry.
Our workforce is the foundation of Kingflex's success. Our team is a tight-knit, talented group focused on providing consistently first-class service to our clients. Our R&D department features 8 professional engineers dedicated to material innovations. Our operations also include 6 international sales professionals and 230 production workers ensuring quality control.
Through rigorous research, Kingflex has designed products that excel in various sectors, including construction, petroleum, chemicals, national defense, aerospace, and metallurgy. Over the past 16 years, we have built a footprint across 66 countries.
Innovation vectors transforming thermal efficiency, environmental compliance, and architectural integration.
Developing halogen-free, low-smoke chemical formulations to minimize ecological impact during combustion, matching strict EU regulatory standards.
Refining polymer cross-linking to decrease thermal conductivity under extreme conditions while maintaining high flexibility.
Integrating multi-layer aluminum foils and UV-resistant jackets directly at the factory stage to eliminate on-site jacketing time.
How Kingflex elastomeric materials solve thermal challenges across specialized real-world systems.
In large-scale commercial structures like shopping malls, high-rise hotels, and hospitals, chilled and hot water loops run continuously. Ambient humidity leads to sweating on metal pipes, causing water damage to plasterboard ceiling tiles and breeding toxic mold. Applying Kingflex Rubber Foam Insulation Pipes prevents this condensation loop by keeping the outer surface temperature of the insulation above the local dew point.
Petrochemical processing and liquefied gas systems operate at extreme sub-zero temperatures. Standard fiberglass degrades quickly under these conditions. Kingflex’s flexible cryogenic insulation systems remain pliable at temperatures as low as -40℃, preventing micro-fractures in the thermal barrier and sealing out moisture to protect against pipeline rust.
Urban density has elevated noise management from a comfort issue to a key regulatory concern. Noise travels through fluid pathways inside buildings. Kingflex open-cell sound-absorbing insulation lines mechanical rooms and ventilation ducts to damp high-frequency blower noise and mitigate structural vibrations.
Outdoor solar collectors and hot-water pipe routes face exposure to solar UV radiation and weathering. Integrating foil-clad systems like Kingflex Aluminum Foil-Clad Rubber Foam Rolls reflects harmful solar radiation, extending the insulation's service life to 10-15 years.
Our materials undergo testing by global standards agencies to certify high thermal efficiency and fire performance.
Showcasing real-world installations of our NBR/PVC elastomeric foam pipes and sheet rolls across key project applications.
Customer satisfaction drives our process. We ensure complete transparency, providing detailed engineering specifications, progress updates, and traceability data.
Our team works closely with project contractors to verify physical densities, dimensional tolerances, and fire classification ratings, ensuring smooth handovers.
Our employees are the core of Kingflex's capabilities. Together, we work with a shared vision of providing first-class service and reliable quality for our clients. We combine automated manufacturing with manual inspection to deliver high-quality materials on schedule.
We regularly host international clients for on-site inspections of our Dacheng manufacturing facilities. Here, we conduct live trials showcasing flame retardancy, elasticity rebound metrics, and moisture resistance, building confidence with our global partners.
Find professional answers to common questions about Class 0 NBR/PVC elastomeric foam insulation materials.
It is mainly used for HVAC air ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its high flexibility makes it ideal for complex pipe systems.
Yes, our rubber foam insulation products are flame retardant and meet safety standards for building and industrial projects, including BS 476 Class 0 and Class 1 standards.
Rubber foam is flexible, closed-cell, and moisture-proof, making it suitable for HVAC and building insulation. Rock wool is high-temperature resistant and fireproof, designed primarily for industrial high-temperature pipelines.
Yes, we support OEM/ODM services, allowing customization of thicknesses, inner diameters, surface foils, and lengths to meet different project needs.
Our products have passed BS 476, CE, REACH, ROHS, UL94, ASTM, and other international certifications, ensuring compliance with global standards.
Yes. Every production batch is logged with manufacturing details, raw material inputs, and quality control reports to ensure accountability.
We produce sheet rolls in thicknesses ranging from 6mm up to 50mm, accommodating a wide range of thermal resistance requirements.
Under normal operational conditions and proper installation, the service life of our rubber insulation products is approximately 10 to 15 years.
A catalog of our precision production operations and structural testing at Kingflex.
Select from our specialized elastomeric foam lines to request customized bulk quotes.
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