Explore our high-performance thermal and acoustic insulation range. Designed for maximum thermal efficiency and vapor condensation resistance.
High-density nitrile/PVC blended elastomeric sheets for wide-temperature application ranges.
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Ecological green formulation designed for visual identification and clean-room projects.
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Specifically formulated to withstand cryogenic stress and thermal shocks at ultra-low ranges.
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Closed-cell structure blocks moisture and air penetration, optimizing thermal performance.
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Heavy-duty elastomeric solution for LNG, liquefied industrial gas pipelines, and cryogenic storage.
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Pre-slit and seamless structural pipes for swift construction and maximum energy savings.
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High-flexibility roll stocks suitable for large diameter pipelines, ducts, and custom tanks.
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Reliable condensation control and acoustic dampening for sanitary water and cooling lines.
Contact SupplierIn contemporary engineering architectures, thermal energy conservation and structural security are intensely dependent on precision insulation systems. Flexible Elastomeric Insulation (FEF), traditionally synthesized using a core Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) blend, represents the pinnacle of moisture resistance and thermal protection. By incorporating a densely packed, micro-cellular closed matrix (exceeding 98% closed-cell structure), this material successfully impedes vapor migration and maintains highly stable thermal conductivity (λ ≤ 0.034 W/(m·K) at 0°C).
With the global transition toward smart buildings and strict eco-regulations, the insulation market is shifting from open-cell alternatives like fiberglass and mineral wool toward high-density elastomeric materials. Kingflex Insulation Co., Ltd., backed by over 40 years of manufacturing lineage, drives this shift through advanced gas-injection continuous extrusion technology. Our materials prevent the catastrophic phenomenon of Corrosion Under Insulation (CUI) and eliminate standard condensation risks, securing structural durability across building lifecycles.
Operating out of Dacheng, China—historically celebrated as the global capital of energy-efficient green building materials—Kingflex utilizes local resource clustering. The integration of high-grade raw monomer sourcing, centralized additive chemical supplies, and high-capacity processing infrastructure gives us a highly cost-efficient production flow.
Unlike fragmented manufacturing setups, Kingflex operates five large-scale fully automated continuous assembly lines. This level of automation keeps output consistent, reduces thermal fluctuation within foam batches, and achieves unmatched delivery lead times for global engineering clients. By placing raw material synthesis and shipping logistics under unified operational control, we shield our clients from localized cost volatility and supply-chain interruptions.
When deploying insulation globally, compliance with localized building codes is critical. Kingflex flexible elastomeric materials are engineered to satisfy stringent worldwide regulatory frameworks. Our products undergo rigorous batch testing to verify they comply with European and North American fire safety, ecological protection, and toxicity standards:




Technical parameters of Kingflex standard sheet rolls and pre-formed tubes. Optimized for commercial HVAC, cryogenic installations, and industrial pipe insulation.
Material Matrix: NBR/PVC blend with fine closed micro-cells.
Thickness Range: 6mm to 50mm customizable parameters.
Bulk Density: 40 - 55 kg/m³ for high mechanical resistance.
Working Limits: -40℃ up to +105℃ surface temperatures.
Core Advantages:
| Insulation Thickness | Standard Width | Roll Length Option | Water Vapor Resistance (μ) |
|---|---|---|---|
| 6mm / 9mm / 13mm | 1.0m / 1.2m / 1.5m | 10m - 30m | ≥ 10,000 |
| 19mm / 25mm / 32mm | 1.0m / 1.2m / 1.5m | 8m - 15m | ≥ 10,000 |
| 40mm / 50mm | 1.0m / 1.2m | 4m - 8m | ≥ 10,000 |




Form Factor: Hollow cylindrical pre-molded sleeves.
Wall Thickness: 9mm to 40mm options.
Internal Diameter (ID): 6mm to 114mm compatible with global pipe standards.
Service Temperature: -40℃ to +105℃.
Key Performance Benefits:




In industrial processes, especially those involving liquefied natural gas (LNG), liquid nitrogen, and ethylene systems, insulation systems must handle extreme cold (from -100°C down to -200°C). Normal cellular insulation can become brittle at these temperatures, leading to cracking from thermal contraction.
Kingflex Elastomeric Cryogenic Insulation Series uses a specialized synthetic elastomer formulation with a low glass transition temperature ($T_g$). This molecular structure maintains elastic properties even under severe cooling cycles. By installing a multi-layer composite configuration, our cryogenic systems create an active barrier against heat transfer. This layout protects pipelines from freezing, control boil-off gas (BOG) rates, and prevents structural failure of critical steel lines.



Different projects and industries require tailored insulation properties. Kingflex elastomeric insulation materials are optimized for key global applications:












Maintaining transparent communication and solid quality control is essential for global sourcing. Below are screenshots of direct customer communication and product audits showing the field-proven quality of Kingflex insulation orders.




Direct production catalogs containing specialized elastomeric compositions, corrosion-resistant tube lines, and high-temperature mineral bases.
Industrial-grade pre-molded tube for fast manual slippage or seamless installation.
Added anti-oxidant layer shields internal copper/steel pipes from corrosion.
Highly elastic NBR structure enables installation around complex pipe systems.
Standard closed-cell black pipe insulation designed for building HVAC projects.
Soft-profile insulation sleeves optimized for plumbing and cold water systems.
Specially verified for thermal management in commercial air conditioning lines.
Heavy-duty composite insulation systems for specialized industrial plants.
Low-temp resistant insulation rolls designed for sub-zero liquefied lines.
Dual-purpose sheets providing heat insulation and acoustic soundproofing.
Premium multi-layer synthetic configurations certified for liquefied natural gas plants.
Inorganic fiber mineral board for high-temperature applications.
Flexible mineral wool wrap designed for high-temperature furnace and boiler insulation.
Kingflex maintains deep quality control from the initial compound mixing to shipping placement. Our automatic formulation systems precisely feed rubber raw polymers, vulcanizers, and blowing agents into long continuous extrusion machines. Below is a tour of our plant, demonstrating our continuous output capacity and structured warehousing systems.


Every single batch undergoes testing for density, closed-cell ratio, and dimensional stability. Our logistics team prepares each cargo container using protective moisture-proof films, ensuring products arrive in perfect condition at job sites worldwide.

















Technical answers to common engineering, procurement, and installation questions about flexible elastomeric insulation systems.
Premium specialized insulation lines including acoustic boards, thick sheet rolls, and cryogenic setups.
Dampens low-frequency vibrations and limits noise transfer in air handling rooms.
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Specialized multi-layer insulation systems designed for low-temperature industrial lines.
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Thick-cut sheets provide high thermal resistance without needing double layering.
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Extruded piping insulation sleeves with high flex properties for commercial hot/cold water plumbing.
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Proven protection for ultra-low temperature (ULT) pharmaceutical and laboratory freezers.
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Engineered insulation line for industrial gas storage and low-temperature process lines.
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Inorganic stone wool panels designed for high fire ratings and structural partition safety.
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Resists micro-cracking and controls boil-off gas in LNG shipping systems.
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