Explore our premium grade elastomeric solutions certified for thermal efficiency, safety, and durability.
In modern industrial engineering and architectural design, heat management systems require strict control over energy loss, moisture containment, and fire safety. The Nitrile Rubber Foam Insulation Sheet Roll (composed primarily of a premium Nitrile Butadiene Rubber / Polyvinyl Chloride polymer blend) represents the pinnacle of elastomeric closed-cell insulation materials.
This document details the chemical composition, manufacturing standards, installation parameters, and structural benefits that make Kingflex Insulation Co., Ltd. a premier partner for major mechanical contractors, MEP engineers, and global procurement departments.
A deep look into the structural metrics, performance data, and regulatory compliances of Nitrile Foam Insulation.
The thermal efficiency of Kingflex Nitrile Rubber Foam is rooted in its microscopic cellular structure. Boasting a closed-cell rate of over 98%, the material encapsulates tiny pockets of dry air within a dense elastomeric web. This prevents convective heat transfer and offers remarkable resistance to moisture ingress.
Unlike open-cell materials or fibrous insulations like fiberglass or rock wool, Kingflex elastomeric foam does not require an independent vapor barrier. The polymer structure itself provides a high moisture resistance factor (typically represented by a μ-value of ≥ 10,000), making it immune to structural rot, mold proliferation, and moisture-induced thermal degradation.
| Physical Property | Standard Value / Rating | Test Reference |
|---|---|---|
| Material Composition | Nitrile Butadiene Rubber / PVC Blend | ASTM D1667 |
| Density Range | 40 kg/m³ to 55 kg/m³ | ASTM D1622 |
| Available Thickness | 6mm to 50mm (Sheets/Rolls) | Custom OEM Supported |
| Service Temperature Limit | -40°C to +105°C (-40°F to +221°F) | EN 14706 |
| Fire Performance | Class 0 & Class 1, Self-Extinguishing | BS 476 Part 6 & 7 / UL94 V-0 |
| Thermal Conductivity | ≤ 0.034 W/(m·K) at 0°C | ASTM C518 |
Founded by the Jinwei Group (established in 1979 as the pioneer of thermal insulation systems north of the Yangtze River), Kingflex has grown into a leading manufacturing and trading powerhouse. We focus on energy conservation, environmental sustainability, and custom mechanical protection solutions.
Headquartered in Dacheng, China—a globally recognized hub for eco-friendly building materials—Kingflex handles the entire product cycle: consultation, R&D, high-capacity manufacturing, installation guidance, and worldwide after-sales support.
With an annual output of over 600,000 cubic meters across 5 automated lines, we are a designated manufacturer for major infrastructure agencies, including the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Understanding the micro and macro economic benefits of purchasing elastomeric insulation from China's premier industrial bases.
Our proximity to China's core chemical clusters ensures a steady, cost-controlled supply of high-grade raw Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) polymers. This vertical supply chain integration insulates global buyers from raw material volatility.
Our facility runs five high-speed, continuous-vulcanization extrusion lines. Controlled by modern PLCs, these lines ensure uniform cell distribution, precise thickness control, and smooth surfaces that reduce mechanical friction and wear.
Kingflex maintains strict compliance with ISO 9001:2015 for quality control and ISO 14001:2015 for environmental management. Every production run is laser-stamped with a traceability code, allowing buyers to verify the origin, test batch, and chemistry of their rolls.
How Nitrile Rubber Foam Insulation resolves complex thermal insulation and condensation challenges across major industrial sectors.
Large chilled water networks in commercial buildings are prone to sweating, dripping, and thermal loss. Our closed-cell rubber sheet rolls form a seamless vapor barrier that eliminates moisture condensation, protecting ceiling finishes and structural frameworks.
For ultra-low systems operating down to cryogenic temperatures, we supply the Dolefin and specialty low-temperature elastomeric foam lines. These prevent mechanical cracking from thermal contraction and block extreme heat gain into the LNG lines.
Open-cell or composite structural NBR foam sheets absorb sound energy, making them ideal for lining mechanical rooms, enclosing industrial pump rooms, and reducing noise in mass transit systems, passenger ships, and railway cars.
At Kingflex, we believe product superiority is rooted in continuous innovation. Our R&D center is equipped with advanced testing systems for thermal conductivity, fire behavior, environmental emissions, and tensile strength.
Our team includes 8 dedicated professional engineers focused on improving elastomeric properties and developing next-generation products, such as halogen-free and low-smoke formulations.
Supporting our global operations are 6 dedicated international trade sales representatives and 230 skilled production workers who maintain our standard of quality on every production run.
Kingflex products are engineered to comply with major global safety, building, and environmental standards. We submit our products to third-party verification to ensure consistent quality in every roll and tube we deliver.
Our active certifications include BS 476, CE, REACH, RoHS, UL94, and ASTM. This compliance makes our product line suitable for project designs worldwide, from municipal developments to chemical refineries.
A look at the scale of our production environments, client meetings, and global project supply shipments.
We work closely with global engineering clients and procurement agencies. Our sales and engineering teams offer fast, transparent quotes, technical drawings, chemical data sheets, and custom packaging layouts to ensure trouble-free integration at the construction site.
Kingflex Standard Dimension Details:
Central air conditioning (air ducts and pipe insulation), building walls and roofs, HVAC water supply lines, industrial chemical storage tanks, acoustic dampening panels, and marine engine room linings.
Kingflex Standard Dimension Details:
Commercial HVAC chilled/hot water pipelines, condensate lines, building antifreeze water pipelines, hotel duct systems, industrial chemical process piping, cryogenic piping, and solar heating system pipe networks.
Our advanced manufacturing floor ensures every sheet roll and tube meets tight dimensional tolerances and quality specifications.
The lifespan of a high-performance closed-cell NBR/PVC insulation sheet roll depends on its formulation stability and resistance to environment degradation. Under typical operating conditions, Kingflex insulation has an operational lifespan of 10 to 15 years.
Key to this longevity is our proprietary anti-aging compounding system. Exposure to UV rays, ambient ozone, and cycling temperatures can break polymer bonds in lower-grade rubber foams, causing surface cracking and loss of closed-cell structure. Kingflex addresses this by adding advanced antioxidants and carbon black stabilizers during compounding.
This formulation makes our sheet rolls suitable for outdoor use when combined with protective coatings, as well as for high-humidity indoor plant rooms and maritime applications.
Get answers to frequently asked technical questions from engineers and procurement managers about elastomeric rubber foam insulation.
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation in mechanical rooms. Its closed-cell structure prevents condensation and reduces energy transfer.
Yes, our rubber foam insulation products are fire retardant. They meet major building safety standards, including BS 476 Class 0 and Class 1, and UL94 V-0 ratings, ensuring they are self-extinguishing and will not spread fire.
Rubber foam is flexible, has a closed-cell structure, and resists moisture without requiring an additional vapor barrier. It is ideal for HVAC and refrigeration systems. Rock wool is a fibrous material that resists very high temperatures, making it suitable for industrial high-temperature steam lines, but it requires a protective jacket to keep moisture out.
Yes, we support full OEM and ODM services. We can customize density, wall thickness, custom colors, self-adhesive backings, and foil outer laminates to meet specific project guidelines.
Our products have passed certifications such as BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures compliance with regional building and safety regulations around the world.
Yes, all Kingflex products feature production batch stamps. This allows tracking from raw material intake through quality inspection to final shipment container, ensuring accountability.
We produce sheet rolls in thicknesses ranging from 6mm to 50mm. Thicker options are available by custom order or layering to meet thermal design requirements.
When installed correctly within the recommended temperature range and shielded from direct sunlight (or protected with UV-resistant coatings), the typical service life is about 10 to 15 years.
Moisture absorption is a primary cause of insulation breakdown, as water has a thermal conductivity 25 times higher than dry air. The closed-cell structure of NBR/PVC elastomeric foam keeps moisture out, preserving the dry air pockets inside and keeping thermal conductivity stable for years.
Halogen-free insulation does not contain chlorine, bromine, or fluorine. In a fire, it will not release toxic halogen acid gases, protecting personnel and preventing acid gas corrosion on sensitive electronics in data centers, marine vessels, and cleanroom facilities.
Choose from our full range of thermal and cold insulation systems developed for global commercial and industrial applications.
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