Select from our comprehensive list of industry-leading cold and thermal insulation systems
In modern industrial processes, dealing with ultra-low temperatures (ULT) and cryogenic fluids requires specialized engineering insulation systems. From liquid natural gas (LNG) distribution lines operating at -162°C to aerospace structures and advanced cooling setups utilizing liquid nitrogen down to -196°C, managing thermal transfer is a significant challenge. Uncontrolled thermal ingress results in substantial boil-off gas (BOG) losses, mechanical failures, structural hazards due to severe ice accumulation, and corrosion under insulation (CUI).
Conventional insulation materials, such as rigid cellular plastics or open-cell mineral wools, frequently struggle in these demanding environments. Moisture from ambient air permeates porous structures, condenses, freezes, and causes structural degradation. To prevent these failures, the industrial sector relies on high-performance elastomeric and synthetic rubber cryogenic insulation. These materials maintain exceptional flexibility and elastic resilience even at extreme sub-zero temperatures, providing a continuous, vapor-tight barrier that protects pipelines, storage systems, and heat exchangers.
Kingflex Insulation Co., Ltd. addresses these challenges by manufacturing robust elastomeric NBR and PVC insulation. Combining modern foaming processes with high closed-cell ratios, Kingflex insulation systems provide long-term thermal resistance, low moisture absorption, and excellent mechanical damping for high-value industrial and commercial applications.
Our cryogenic NBR insulation limits external thermal ingress to minimize liquid boiling, helping process facilities preserve pressure stability and limit product volume loss.
With a closed-cell rate exceeding 98%, our insulation prevents water vapor ingress and condensation, protecting carbon and stainless steel piping from local corrosion.
Our elastomeric insulation absorbs high-frequency acoustic emissions and reduces structural vibrations in mechanical equipment rooms and heavy-duty gas ducting systems.
The global demand for reliable cold conservation solutions is expanding, driven by growth in petrochemical processing, pharmaceutical cold chain logistics, marine engineering, and HVAC systems. As global standards tighten regarding carbon footprints and operational energy efficiency, industrial systems require insulation materials that combine structural longevity with low thermal conductivity.
Kingflex Insulation Co., Ltd. is a major manufacturing and trading combo for thermal insulation products. Headquartered in Dacheng, China—a well-known capital of green building materials—Kingflex concentrates on the research, development, production, and sale of energy-saving, environmentally friendly insulation materials. Our operation prioritizes energy conservation and consumption reduction. We support our customers through technical consultation, R&D production, installation guidance, and post-sale service.
Currently, Kingflex operates five large automatic assembly lines, delivering an annual production capacity exceeding 600,000 cubic meters. Our production capability is recognized by key regulatory departments, and we are a designated production enterprise for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China. In the past 16 years, our thermal and cold insulation systems have been exported to over sixty-six countries across the Americas, Europe, the Middle East, and Southeast Asia.
Kingflex Advanced Production Headquarters & Factory
Kingflex elastomeric rubber foam products are formulated to provide high-performance thermal insulation under demanding conditions. They form uniform, flexible, closed-cell structures that control heat gain and vapor penetration across their service life. Below are the key engineering specifications, advantages, and applications of our core product lines:
Material: NBR / PVC Blend with closed-cell structure
Standard Dimensions: Thicknesses ranging from 6mm to 50mm
Density Matrix: 40 to 55 kg/m³ for high physical stability
Service Temperature Range: -40℃ to 105℃ (Suitable for chilling, HVAC, and hot water storage)
Central air conditioning duct insulation, wall and roof thermal shielding, rail transit carriages, marine cold rooms, and industrial storage tanks.
Material: Polymeric NBR / PVC base material
Standard Dimensions: Thicknesses from 9mm to 40mm; Inner Diameter (ID) from 6mm to 114mm
Density Matrix: 40 to 55 kg/m³
Service Temperature Range: -40℃ to 105℃ (Protects cold pipelines from freeze-thaw cycles)
Chilled and hot water piping networks, HVAC water lines, cold storage pipelines, industrial process steam distribution, and chemical/petrochemical piping systems.
Our parent company, Kingway Group, was established in 1979 and stands as a pioneering thermal insulation manufacturer north of the Yangtze River. Decades of specialized manufacturing experience form the foundation of our engineering capabilities. Kingflex maintains a collaborative team of design, production, and testing experts who ensure product consistency for every batch shipped.
Our dedicated research division includes eight professional design engineers who develop polymers that resist low-temperature embrittlement. They work alongside 6 international sales specialists and 230 production workers. Through continuous testing of elastomeric formulations, our team ensures our NBR and synthetic rubber structures withstand cryogenic stresses without micro-cracking.
Rooted in Jinwei/Kingway Group, bringing over 40 years of continuous manufacturing experience to cryogenic applications.
Equipped with laboratories for testing thermal conductivity, moisture diffusion, and fire resistance limits.
Batch-level testing helps maintain density, thermal efficiency, and mechanical flexibility.
In global industrial engineering, compliance with fire, safety, and chemical standards is mandatory. Kingflex products undergo verification testing to meet these international codes, ensuring peace of mind for engineering consultants and contractors alike.
Our cryogenic and elastomeric systems are tested to meet the standards of major international bodies, including European fire classifications, environmental directives, and North American performance criteria. Below are our key verified certificates:
Class 0 / Class 1 fire spread performance ratings.
European Conformity for thermal insulation products.
Environmentally friendly, non-hazardous compound formulations.
Ensuring fire safety and physical properties under thermal stress.
Cryogenic insulation must adapt to the mechanical, environmental, and thermal requirements of different installation sites. Ambient humidity, atmospheric salinity, wind loads, and thermal cycling all influence design decisions. Here is how Kingflex insulation supports specific engineering scenarios:
On offshore units (FSRUs) and carrier ships, pipelines carry LNG at -162°C. Insulation systems must withstand marine environments and constant mechanical movement without structural failure. Kingflex flexible cryogenic synthetic rubber helps isolate pipes and valves from salty air, preventing corrosion while maintaining thermal stability.
Petrochemical facilities process ethylene (boiling point -103.7°C) and ethane under extreme conditions. The insulation must resist thermal shocks during start-ups and shutdowns. Our closed-cell rubber insulation absorbs thermal expansion stresses, protecting pipe walls and fittings from damage.
In medical manufacturing and cold chain distribution centers, keeping temperatures exact is vital. Our fiber-free NBR foam sheets prevent airborne contamination, making them suitable for cleanroom environments while preventing condensation on refrigeration lines.
As cryogenic processes advance—especially with the growing adoption of liquid hydrogen (LH2) at -253°C for clean energy applications—insulation technology must evolve. Kingflex is committed to a technical roadmap focused on the following areas:
Specifically configured for high-temperature backup thermal protection. Offers fire barriers paired with structural stability for harsh processing facilities.
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