Direct from our state-of-the-art production lines. Certified insulation materials engineered to minimize thermal bridges, eradicate condensation risks, and maximize long-term energy savings.
Kingflex Insulation Co., Ltd. is a globally recognized manufacturing and trading powerhouse, specializing in high-performance thermal insulation solutions. Operating under the umbrella of the prestigious Jinwei Group, which boasts a heritage spanning more than 40 years, Kingflex was built upon the historical foundation of the first-ever thermal insulation manufacturer north of the Yangtze River.
Nestled in Dacheng, China—widely regarded as the capital of green building materials—our production and research department operates with a fundamental concept: energy saving and carbon footprint reduction. From comprehensive technical consultations and advanced molecular R&D, to custom-engineered production, direct installation guidance, and dedicated post-sale support, we pave the way for sustainable global construction and heavy industry.
Our team is built on unified collaboration and specialized expertise, working with a shared vision to provide first-class service and rigorous quality guarantees for our global clients. Kingflex boasts a highly integrated human resource network, including:
By leveraging the historical expertise and manufacturing backbone of the Jinwei Group, established in 1979, we combine decades of craftsmanship with modern digital manufacturing techniques. Our advanced production technologies enable us to control cell size, density distribution, and thermal expansion properties at microscopic levels.
A macroeconomic look at why closed-cell elastomeric blankets and rubber foam structures are replacing traditional open-cell insulation systems.
Modern commercial infrastructure demands products that contribute to green building certifications. Energy conservation translates directly to carbon footprint offset, making low thermal conductivity materials essential.
In cold systems, moisture ingress is the primary cause of thermal failure. High-resistance closed-cell rubber foam functions as its own built-in vapor barrier, maintaining structural integrity over decades.
With the rise of LNG shipping, petrochemical refining, and aerospace engineering, materials must remain flexible at ultra-low sub-zero environments, avoiding cracking and mechanical failure.
Industrial procurement is no longer just about purchasing a roll of insulation. It's about designing a complex system that balances thermal resistance, fire rating compliance, acoustical damping, and longevity. Kingflex offers engineered insulation blankets that solve the three critical vulnerabilities in industrial piping networks:
Detailed performance parameters for Kingflex Black Rubber Foam Insulation Blankets, Sheets, and Pipes.
| Specification Parameter | Kingflex Standard Sheet & Roll Range | Kingflex Standard Pipe & Tube Range |
|---|---|---|
| Base Material Structure | NBR/PVC Elastomeric Closed-Cell Polymer | NBR/PVC Elastomeric Closed-Cell Polymer |
| Available Thickness | 6mm to 50mm (Customizable) | 9mm to 40mm |
| Inner Diameter (ID) | N/A (Flat sheet/roll form) | 6mm to 114mm |
| Foam Density Range | 40 to 55 kg/m³ | 40 to 55 kg/m³ |
| Service Temperature Limit | -40℃ to +105℃ (Ultra-low cryogenic lines available) | -40℃ to +105℃ |
| Closed-Cell Rate | ≥ 98% | ≥ 98% |
| Moisture Resistance Factor (μ) | High moisture barrier resistance | High moisture barrier resistance |
| Flame Retardancy Standard | BS 476, Class 0/1, UL94, ASTM E84 compliant | BS 476, Class 0/1, UL94, ASTM E84 compliant |
Equipped with high-throughput computerized extrusion systems that guarantee uniform cell distribution, flat surfaces, and precise thickness dimensional tolerances.
Our scale guarantees supply chain stability. We are a designated supplier for national ministries including the Ministry of Energy and Chemical Industry.
Exporting for over 16 years, our logistics network provides container optimization, seaworthy packaging, and flexible global delivery schedules.
Meeting global building regulations is critical for large-scale engineering projects. Our facility is certified to the highest standards.
Kingflex thermal insulation solutions hold certifications including BS 476, CE, REACH, RoHS, UL94, and ASTM. Every batch is traceable back to the raw material processing stage, ensuring accountability and peace of mind for engineering inspectors.
Proven durability across real-world commercial structures, deep-sea vessels, chemical processing pipelines, and high-volume HVAC networks.
Transparency is key. Read authentic screenshots of global buyers confirming product quality, thermal performance, and delivery timelines.

















Get answers to common engineering questions regarding the application, properties, and customization of Kingflex rubber foam insulation.
A1: It is primarily used for HVAC air duct wrapping, air conditioning chilled or hot water pipelines, commercial building insulation, industrial manufacturing pipeline cold insulation, and high-performance acoustic isolation.
A2: Yes, our elastomeric rubber foam is built with advanced fire retardants that meet international BS 476 (Class 0/Class 1), UL94, and ASTM safety standards, rendering it self-extinguishing.
A3: Rubber foam is highly flexible, closed-cell, and naturally moisture-proof, making it optimal for cooling, HVAC, and condensation control. Rock wool is a fibrous mineral structure with superior high-temperature fire shielding, perfect for heavy industrial furnace pipes but prone to water absorption.
A4: Yes, we provide full OEM and ODM services. This includes laminating with aluminum foil protective facings, applying double-sided self-adhesive backings, adjusting density (40-55 kg/m³), or customizing sheet thickness up to 50mm.
A5: Our products are fully certified under BS 476, CE, REACH, RoHS, UL94, and ASTM. This guarantees compliance with strict environmental regulations and high fire-safety parameters worldwide.
A6: Yes. Every production run has a distinct batch code. We track everything from raw chemical processing to final packaging, maintaining absolute transparency for audits.
A7: Our standard extrusion lines can produce sheets from 6mm up to 50mm thick, depending on specific structural R-value target requirements.
A8: When properly sized and installed according to engineering guidelines, Kingflex rubber foam insulation will easily perform efficiently for 10 to 15 years.
Closed-cell elastomers for ultimate condensation control and thermal barrier protection.
Lightweight fiberglass batting structures for structural cavity wall heat resistance.
Dense mineral fiber blankets offering maximum fire safety and structural acoustic blocking.
Specific designs engineered for HVAC air handlers, cryogenic systems, and plumbing installations.
Select products engineered for extreme sub-zero pipelines, multi-layer acoustic dampening, and halogen-free environments.
Our products are rigorously categorized to cover every performance parameter. Check the direct configurations below for standard materials:
Custom formulations are designed by our 8 in-house R&D engineers, ensuring structural density matches specific climatic conditions and acoustics requirements.