Explore our elite range of flexible elastomeric closed-cell insulation materials, manufactured to exceed strict British Standards and global construction codes.
The demand for high-grade flexible elastomeric foam insulation (often queried alongside specialized structural adhesive systems like "Flex Glue") is experiencing rapid expansion in the UK and European markets. Driven by stringent sustainability targets, including the UK Net Zero 2050 mandate, modern commercial developments and public infrastructure projects require mechanical insulation materials that optimize energy performance while offering bulletproof moisture resistance.
In the UK's challenging marine and damp climate, moisture ingress in piping systems is a primary catalyst for Corrosion Under Insulation (CUI). Traditional fibrous insulation materials like rock wool are highly susceptible to moisture collection. By contrast, closed-cell NBR/PVC elastomeric rubber foam provides a built-in, continuous vapor barrier. This structural integrity guarantees that the thermal conductivity remains stable throughout the mechanical lifespan of the system.
"High-density elastomeric systems combined with high-tack flexible adhesives provide seamless thermal barriers, eliminating mechanical draft issues and reducing thermal bypass by up to 34%."
Analyzing the chemical, physical, and fire properties of NBR/PVC Closed-Cell Foam
Features an even foaming structure with a closed-cell rate exceeding 98%. This microporous engineering halts water vapor migration and locks in long-term thermal resistance values, ensuring high performance in humid environments.
Designed and tested to meet international standards such as BS 476 (Class 0 & Class 1), UL 94, and CE. The material contains non-halogenated flame retardants that cause self-extinguishing behavior and minimal toxic gas release.
The elastomer structure functions as a mechanical barrier for structural vibration and airborne sound transmission. Ideal for building machine rooms and air conditioning ductwork systems seeking acoustic decibel reduction.
Deploying flexible elastomeric systems in core infrastructure sectors across the United Kingdom.
Modern commercial buildings in major UK urban centers like London, Birmingham, and Manchester require highly efficient mechanical air systems. Kingflex elastomeric sheets are widely specified for central AC ducting to prevent heat loss, suppress HVAC fan noise, and secure moisture control on cooling coils.
With the rise of low-temperature engineering and liquid natural gas (LNG) terminals, insulating pipes at temperatures down to -196°C is vital. Our specialized elastomeric cryogenic systems deliver crack resistance, micro-deformation tolerance, and long-term thermal resistance under extremely demanding conditions.
Elastomeric foam requires chemical-resistant adhesive joints ("Flex Glue" systems) to build continuous seals. Our adhesive compatibility portfolio ensures joints remain airtight, resisting temperature fluctuations and stress cycles over a lifespan of 10 to 15 years.
Kingflex Insulation Co., Ltd. - Driving green building energy solutions since 1979.
Kingflex is established by the renowned Jinwei Group, which possesses a proud history of more than 40 years. Founded in 1979, Jinwei Group was the pioneer manufacturer of thermal insulation materials north of the Yangtze River. Today, Kingflex has evolved into a global titan in elastomeric research, engineering, and sales.
Equipped with 5 large automatic continuous assembly lines, Kingflex boasts an annual production capacity exceeding 600,000 cubic meters. We are honored as a designated production enterprise by major engineering bureaus and ministries. With 8 professional R&D engineers, 6 experienced international sales specialists, and 230 skilled production employees, we ensure quality control and timely delivery.
All products strictly match global environmental directives. Our lines carry CE, REACH, RoHS, UL94, and ASTM certifications, validating safety, chemical neutrality, and robust structural performance for construction and industrial networks worldwide.




Expose the core technology and processes supporting our 600,000 cubic meters capacity.












Detailed physical dimensions and performance ratings for Kingflex Rubber Foam Products.
How Kingflex addresses future industrial challenges with smart materials.
Moving toward zero ODP (Ozone Depletion Potential) and extremely low GWP (Global Warming Potential) foaming agents. Preparing UK projects for stricter environmental standards.
Integrating micro-sensors directly within elastomeric sheets to monitor real-time humidity levels and pipe temperatures. Preventing CUI before it compromises structural integrity.
Improving the lifespan of NBR/PVC matrix polymers. Extending the functional insulation cycle past 15 years, lowering long-term maintenance costs for UK facility managers.
Demonstrating structural installations and customer success across the globe.








Transparent feedback highlighting factory quality, logistics, and technical validation.





Find expert answers to common engineering questions regarding elastomeric insulation and bonding.
It is primarily specified for commercial HVAC air ducting, air conditioning pipe networks, building envelope thermal isolation, industrial chemical process pipes, and high-performance sound absorption.
Yes. Kingflex products incorporate specialty non-halogenated flame retardants, allowing them to pass tests like BS 476, UL 94, CE, and ASTM, ensuring they meet the safety regulations of complex building projects.
Rubber foam is a flexible, closed-cell, moisture-proof material ideal for HVAC and cold-service systems. Rock wool has an open, fibrous structure that offers excellent high-temperature and structural fire protection, but requires a separate vapor barrier to prevent moisture accumulation.
Yes, we provide comprehensive OEM and ODM services. We can adjust density, wall thickness, custom diameters, and surface coatings to meet specific architectural or industrial specifications.
Our manufacturing lines and products have successfully passed BS 476, CE, REACH, RoHS, UL94, and ASTM certifications, ensuring compliance with European and global standards.
Yes. Every batch has printed production batch codes, enabling full quality traceability from raw polymer feedstocks through final processing stages.
Our continuous lines produce sheet rolls in thicknesses ranging from 6mm up to 50mm, accommodating a wide range of thermal requirements.
When installed correctly with compatible adhesives under standard operating conditions, our elastomeric products deliver a service life of 10 to 15 years.
Discover more professional-grade insulation pipes and boards from Kingflex.