Explore our elite collection of high-density NBR/PVC and elastomeric foam insulation materials, specifically configured to withstand severe thermal gradients and condensation pressure.
Liquid Nitrogen (LN2) is widely utilized at an ultra-low temperature of -196°C (-320°F) across various sectors. Under these severe cryogenic conditions, traditional insulation methods fail due to the intense vapor pressure and thermal stress. The temperature gradient between the surrounding atmosphere and the inner fluid pipe creates an immense vapor drive, pulling moisture inward where it quickly freezes, causing insulation degradation, pipe cracking, and severe energy loss.
To mitigate these challenges, elastomeric rubber foam insulation must feature an exceptionally high closed-cell rate (above 98%) and low water vapor permeability. This closed-cell geometry creates an integrated moisture barrier that ensures long-term thermal conductivity, safeguarding both structural integrity and operational safety.
Established by the Jinwei Group, which boasts a rich heritage dating back to 1979, Kingflex Insulation Co., Ltd. has stood as the premier thermal insulation pioneer north of the Yangtze River. Based in Dacheng, China—the renowned capital of green building materials—our production operations integrate research, development, and state-of-the-art polymer extrusion processes.
Our manufacturing ecosystem operates on a core value of green-energy optimization. Kingflex does not merely ship rubber foam; we deliver comprehensive thermodynamic insulation engineering solutions—encompassing custom consulting, scientific R&D, structural configuration, installation supervision, and lifetime post-sales support.
Combining automation with academic polymer research to deliver reliable low-temperature performance globally.
Equipped with 5 large automatic continuous assembly lines, our facility is officially designated by the Ministry of Energy, Electric Power, and the Chemical Industry for tier-1 national projects.
Our cryogenic rubber structures are certified to BS 476, CE, REACH, RoHS, UL94, and ASTM standards. Each batch undergoes rigorous cold-cycling testing to ensure zero failure rates.
Over the past 16 years, our international logistics network has successfully delivered cryogenic solutions to over sixty-six countries across Europe, the Americas, and Southeast Asia.
Customized configurations designed to perform in the world's most demanding thermal environments.
Designed to provide thermal protection for large storage vessels, irregular valves, and large-diameter cryogenic ducts.
Extruded tubes designed for seamless integration over refrigeration lines, HVAC setups, and process chemical pipelines.
| Application Sector | Core System Requirement | Recommended Kingflex Configuration | Key Operational Benefit |
|---|---|---|---|
| HVAC & Ducting | Condensation and vibration control | Class 0 / Class 1 NBR Foam Tubes & Sheets | Prevents water pooling, reduces sound transmission |
| Cryogenic Process Pipelines | High resistance to vapor migration at -196°C | Multi-layer Elastomeric Cryogenic System | Eliminates structural ice cracking, protects steel pipes |
| Semiconductor & Cleanrooms | Low-outgassing, high flame retardancy | Halogen-Free Elastomeric Rubber Foam | Protects microelectronics, meets cleanroom standards |
| Marine & Offshore Oil/Gas | Saltwater and UV protection | Alclad-Clad Protective Foam Systems | Resists mechanical damage and salt spray weathering |
How our R&D team is advancing polymer science to address future decarbonization and efficiency mandates.
Transitioning all foam expansion processes to advanced ecological gas mixtures. This ensures our manufacturing lines comply with the Montreal Protocol and the Kigali Amendment, maintaining a Global Warming Potential (GWP) near zero.
Integrating silica aerogel particulates directly into the NBR/PVC matrix. This hybrid structure reduces thermal conductivity ($\lambda$) by up to 25%, enabling thinner insulation profiles on cryogenic lines.
Co-extruding conductive polymer tracking strips within the foam. These strips detect moisture ingress or temperature spikes, transmitting real-time pipeline telemetry to control centers via IoT networks.
Kingflex utilizes localized supply chain networks in Hebei province to source raw polymers, vulcanization agents, and fire retardants. This localized sourcing shields global clients from raw material price volatility and shipping bottlenecks.
We bypass middle channels to offer direct container-load quotes, optimizing the total cost of ownership (TCO) for large construction and industrial projects.
We provide bespoke formulations to adjust density, flexibility, fire rating, and color according to your region's building regulations.
Our materials undergo testing and certification by global safety laboratories to verify performance and quality.
We collaborate with mechanical engineers and contractors globally. The following project logs show our commitment to clear technical support, from production updates to packaging specifications, ensuring smooth logistics from our factory in China to your jobsite.
We maintain transparent communications with our international clients, offering support on technical specs, supply chain logistics, and production updates.
Detailed technical guidance on elastomeric rubber foam insulation design, performance standards, and manufacturing operations.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its high flexibility and closed-cell design prevent temperature drift and surface condensation.
Yes, our rubber foam insulation is fire retardant. Our products meet Class 0 and Class 1 building codes, complying with international fire standards like BS 476 Part 6/7, UL94, and DIN 4102 to ensure safety in commercial and industrial settings.
Rubber foam is flexible, closed-cell, and moisture-proof, making it suitable for HVAC, chilled water lines, and low-temperature applications. Rock wool is high-temperature resistant and fireproof, making it suitable for high-temperature industrial steam piping and furnace thermal envelopes.
Yes, we offer comprehensive OEM and ODM support. We can customize density, wall thickness, inner diameter, color, and adhesive backing to meet specific engineering demands.
Our products are certified to BS 476, CE, REACH, RoHS, UL94, and ASTM standards. This ensures our insulation meets global environmental, safety, and fire standards.
Yes, every batch of Kingflex products features complete traceability. Our quality control system documents the production line parameters, raw material batches, and testing records for each run.
Our manufacturing lines produce sheet rolls in thicknesses ranging from 6mm to 50mm, providing options for both thin HVAC wraps and thick cryogenic barriers.
Under standard operating conditions with professional installation, our products offer an operational service life of 10 to 15 years, maintaining consistent thermal performance throughout.
A look at our production floor, showing the raw material processing, extrusion lines, and packaging bays.
Select from our range of technical insulation solutions, formulated for low thermal conductivity and long-term durability.
Detailed visual overview of NBR and rock wool products manufactured in our facility.
Documentation of our high-volume production batches and warehouse stocks for worldwide logistics dispatch.
Kingflex