Explore our foundational range of elastomeric rubber foam sheets, cryogenic insulation, and acoustic boards engineered for demanding industrial, commercial, and HVAC environments.
In modern industrial applications, keeping thermal losses to a minimum and preventing structural degradation under intense cold conditions is of paramount importance. Ultra-Low Temperature (ULT) insulation sheet rolls represent the cutting edge of elastomeric polymer physics. Traditional thermal insulations such as mineral fibers often struggle when exposed to sub-zero temperatures because of moisture infiltration. When moisture makes its way inside, it freezes, which causes the material to fail and can result in Corrosion Under Insulation (CUI). Kingflex's signature elastomeric closed-cell structure addresses this vulnerability by acting as a highly efficient, built-in vapor retarder.
By combining high-grade Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) matrix structures, Kingflex ULT sheet rolls maintain an exceptionally uniform closed-cell ratio exceeding 98%. This high density of micro-chambers locks air in place, minimizing convective thermal transfer. It maintains stable thermal conductivity (λ) even across wide thermal shifts from -40°C up to 105°C, and under specialized cryogenic conditions down to liquid gas levels.
Our ULT materials are designed from the ground up to prevent convective currents within the cells. This cellular confinement keeps heat transfer via convection near zero, allowing the material to perform consistently in applications ranging from LNG processing plants to HVAC chilled-water loops. In high-humidity environments, this prevents surface condensation and structural mold, which are common points of failure in open-cell alternatives.
Combining over four decades of thermal engineering heritage with advanced automated manufacturing capacity.
Founded by the Jinwei Group (established in 1979 as the first thermal insulation manufacturer north of the Yangtze River), Kingflex Insulation Co., Ltd. has developed into a leading energy-saving and environmentally focused enterprise. Our production plant in Dacheng, China—a hub for green building materials—integrates R&D, mass production, and global sales under one roof.
Kingflex is recognized as a designated production enterprise by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry. We provide complete systems that combine heat preservation, cold conservation, and sound dampening into a single solution.
The global dominance of China-based manufacturers in the insulation sector is the result of continuous process innovation, integrated raw material supply chains, and significant economies of scale. At Kingflex, this advantage is backed by real-world expertise and strict quality control:
By procuring raw rubber polymers, blowing agents, and fire retardants directly within local industrial clusters, we insulate our operations from supply chain delays and keep material costs stable.
Our five automatic assembly lines rely on PLC-controlled micro-foaming technology to ensure a consistent, uniform cell structure and reliable cell density across every production batch.
Every batch undergoes strict testing for thermal performance, fire resistance, and moisture migration. This ensures full compliance with international standards such as BS 476, CE, REACH, RoHS, UL94, and ASTM.
Global procurement managers face complex regulatory and performance challenges when sourcing insulation materials. Project requirements often specify strict fire classifications (such as Class 0 and Class 1 standards) and demand clean, chemical-free profiles (like halogen-free, low-smoke materials). Kingflex addresses these needs by offering fully traceable products certified to ISO 9001 and ISO 14001, providing peace of mind from production to installation.
Detailed performance benchmarks and dimensional standards for standard industrial deployments.
Ideal for large-diameter ductwork, tanks, irregular flat surfaces, and massive macro-piping systems.
| Material Base | NBR/PVC Elastomeric Foam |
| Thickness Range | 6mm to 50mm |
| Density Range | 40 - 55 kg/m³ |
| Service Temperature | -40℃ to 105℃ (Supports Cryogenic Systems) |
| Closed-Cell Rate | > 98% |
Designed for rapid, slip-on installation for HVAC piping networks, steam lines, and refrigeration circuits.
| Material Base | NBR/PVC Elastomeric Foam |
| Wall Thickness | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm |
| Density Range | 40 - 55 kg/m³ |
| Compression Resilience | > 80% Recovery Rate |
Continuous innovation in material science, backed by strict international testing and compliance certifications.
Kingflex maintains a dedicated in-house research laboratory staffed by eight professional engineers. Our engineering team focuses on enhancing the chemical properties of elastomeric NBR/PVC blends to improve flame resistance, reduce smoke generation, and increase thermal resilience.
This commitment to continuous improvement has helped us develop specialized insulation products that withstand extreme thermal cycling. These materials perform reliably across a wide range of temperatures, helping projects operate efficiently for years to come.
Proof of field performance: Kingflex materials installed across large-scale commercial, municipal, and industrial projects worldwide.
At Kingflex, our team is the foundation of our success. We bring together diverse talents with a shared commitment to providing excellent service and support for our clients.
Our operation is supported by 8 dedicated R&D engineers, 6 international sales specialists, and 230 skilled production workers. This team ensures that every roll and tube we produce meets our high standards for thermal performance and reliability.
Over the past 16 years of export operations, Kingflex has built relationships with distributors, mechanical contractors, and engineering firms worldwide. We work closely with our partners to provide thermal insulation solutions that meet local building codes and performance requirements.
Our collaborative approach extends from initial technical consultations and custom manufacturing to installation guidance. This helps ensure that every project is completed successfully and performs reliably over time.
The global thermal insulation landscape is changing quickly, driven by stricter energy regulations and a growing focus on sustainability. Five key trends are shaping the future of elastomeric materials:
Kingflex insulation systems are engineered to address performance demands across several major sectors:
District Cooling and Heating Networks: Large-scale urban development relies on insulated pipeline networks to transport chilled water over long distances. Our closed-cell rubber foam prevents surface condensation and maintains water temperature from the source to the end user.
Marine and Offshore Installations: Saltwater environments accelerate corrosion and material breakdown. Kingflex materials are engineered to resist moisture absorption and salt air exposure, providing reliable thermal protection on offshore platforms and marine vessels.
Data Centers and Cleanrooms: High-performance cooling systems require clean, fiber-free insulation to prevent airborne contamination. Our dust-free NBR/PVC foam is well-suited for sensitive electronics and medical facilities.
Technical answers to common questions about elastomeric foam materials, specifications, and installation practices.
Explore our specialized range of elastomeric thermal tubes, rock wool blankets, and flexible piping systems designed for demanding industrial operations.
Browse our selection of specialized elastomeric tubes, corrosion-resistant pipes, and high-temperature rock wool solutions.
Flexible tubular insulation for refrigeration and hot water lines, providing reliable protection against heat transfer and condensation.
Formulated to help mitigate Corrosion Under Insulation (CUI) on copper and steel pipes exposed to harsh environments.
Highly flexible insulation designed to slip easily around bends and corners in tight mechanical spaces.
Standard mechanical insulation for heating, ventilation, and air conditioning systems.
Versatile elastomeric tubing for industrial, plumbing, and automotive insulation applications.
Thermal insulation designed to improve system efficiency and manage condensation on chilled water lines.
A comprehensive system designed for ultra-low temperature and cryogenic industrial applications.
Flexible thermal protection engineered to maintain its physical properties in liquid gas and cryogenic storage systems.
Designed for industrial processes operating at extreme sub-zero temperatures, providing reliable insulation and vapor barrier performance.
Cold-preservation insulation for liquid natural gas (LNG) terminals and chemical processing plants.
High-density mineral fiber boards designed for thermal insulation and acoustic control in high-temperature applications.
Flexible rock wool blankets suitable for wrap-around insulation on boilers, ovens, and large-diameter industrial pipes.
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