Explore our precision-engineered selection of elastomeric foam insulation materials designed to maximize thermal efficiency and control condensation.
Kingflex Insulation Co., Ltd. stands at the forefront of the global thermal and acoustic insulation industry, functioning as a premier integrated manufacturing and trading conglomerate. Strategically located within Dacheng, China—historically celebrated as the undisputed "Capital of Green Building Materials"—our organization is dedicated to research, technological innovation, large-scale production, and end-to-end consulting services.
Under the operational banner of "Energy Conservation and Carbon Emission Mitigation," we construct high-performance elastomeric insulation solutions designed to tackle the most demanding thermal dynamics in commercial building complexes, heavy petrochemical installations, aerospace design, and cryogenics. We supply holistic mitigation strategies addressing heat transfer, thermal bridging, structural condensation, and high-intensity acoustic interference, steering the evolution of sustainable infrastructure worldwide.
The performance of rubber foam insulation relies on the microscopic architecture of its cellular structure. Unlike open-cell fibrous structures like glass wool or rock wool, Kingflex elastomeric insulation is formulated using a co-polymerization process of Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC). This matrix is expanded under precise thermochemical conditions to yield a closed-cell content exceeding 98%.
This closed-cell density (ranging from 40kg/m³ to 55kg/m³) operates as an integrated thermal and vapor barrier. Every single cubic centimeter of our NBR/PVC matrix contains millions of micro-cavities filled with inactive air. This geometry restricts the mean free path of gas molecules, resulting in an exceptionally low thermal conductivity ($\lambda \le 0.034 \text{ W/m}\cdot\text{K}$ at 0°C). Concurrently, this closed-cell wall blocks the migration of gaseous moisture, achieving a high vapor resistance factor ($\mu \ge 10,000$), rendering external vapor jackets obsolete.
By locking out moisture, Kingflex rubber sheets prevent the accumulation of water inside the insulation layer. Even a 1% moisture absorption by volume can lead to a 10-15% increase in thermal conductivity. Our high-density NBR matrix ensures thermal stability throughout the system life.
Boasting a compression resilience rate of >80%, Kingflex NBR/PVC sheets withstand mechanical stresses associated with pipeline expansion and external pressure, ensuring long-term thickness retention and insulation effectiveness.
Engineered with complex halogen-free or classic flame-retardant compound formulas, Kingflex products comply with critical international safety fire codes (BS 476 Part 6/7 Class 0/1, UL94 V-0, and ASTM E84).
| Performance Metrics | NBR/PVC Elastomeric Rubber Foam | Traditional Glass / Rock Wool | Polyurethane Foam (PU) |
|---|---|---|---|
| Thermal Conductivity (at 0°C) | ≤ 0.034 W/m·K | 0.036 - 0.042 W/m·K | 0.024 - 0.030 W/m·K |
| Moisture Vapor Resistance (μ) | ≥ 10,000 (Built-in Vapor Barrier) | ≤ 1.2 (Needs external cladding) | 50 - 150 (Vulnerable to aging) |
| Operating Temperature Range | -40°C to +105°C (ULT up to -196°C) | Up to +650°C (Poor sub-zero limit) | -50°C to +110°C |
| Acoustic Attenuation Capacity | High (Vibration dampening + absorption) | Excellent (Absorption only, no dampening) | Low |
| Corrosion Under Insulation (CUI) Risk | Extremely Low (Non-wicking material) | High (Acts like a water sponge) | Medium |
Modern engineering procurement demands a shift from simple unit-price comparison toward total-cost-of-ownership (TCO) evaluation and strict ESG (Environmental, Social, and Governance) parameters. The demand for industrial rubber foam sheet rolls is driven by regional energy regulations, green building standards (such as LEED v4 and BREEAM), and the expansion of heavy computing and cold-chain supply operations worldwide.
1. The Halogen-Free and Green Building Revolution: High-density urban zones and modern transport infrastructures specify low smoke toxicity profiles. Halogen-free formulations prevent toxic acid gas emission during fire incidents. Project specifications in the EU and North America now demand UL94, RoHS, and REACH certified materials.
2. Extreme Cryogenic & LNG Engineering: The rapid growth of Liquefied Natural Gas (LNG) processing and ultra-low temperature chemical processing has made traditional hard-shell insulation obsolete. Flexible, multi-layered alkadiene-modified elastomeric sheets remain flexible at temperatures down to -196°C, absorbing thermal expansion stress and reducing the risk of structural cracking.
CUI accounts for massive maintenance expenditure globally. Closed-cell elastomeric rubber foam forms a water-impermeable layer against metal pipes, avoiding water trapping and preventing rust. As a result, global engineering procurement groups are replacing fibrous insulation materials in offshore platforms, chemical processing plants, and commercial HVAC networks.
Kingflex Insulation Co., Ltd. operates as a modern manufacturing hub, backed by Jinwei Group's legacy of production leadership since 1979. We have built a fully digitized plant in Dacheng, China, incorporating lean manufacturing protocols with Industry 4.0 automation systems.
Our facility houses five high-capacity automated continuous extrusion lines, producing an annual volume exceeding 600,000 cubic meters. Our production lines feature inline infrared thickness inspection, auto-dosing systems for flame-retardant mixtures, and computerized vulcanization heat-tunnels to guarantee cell structure consistency across every batch. This automated process minimizes variance in density and performance, enabling us to serve major infrastructure works commissioned by the Ministry of Energy, Ministry of Chemical Industry, and Ministry of Electric Power.
Our centralized supply chain control ensures resilience in logistics. Raw materials are sourced locally, insulating our production costs from international shipping fluctuations. We have shipped to 66+ countries, including the Middle East, Southeast Asia, South America, and Europe. Our production schedules are linked directly to major seaport hubs like Tianjin and Qingdao, allowing us to maintain stable lead times and large-volume delivery cycles.
Our products are engineered for high-performance service across diverse, challenging structural applications.
In humid high-temperature environments (like tropical zones and coastal projects), condensation on HVAC ducts can cause structural damage. Kingflex self-adhesive elastomeric sheets block warm air contact with cold metal, eliminating moisture buildup on duct walls.
LNG facilities and ultra-low temp storage tanks require insulation that remains flexible below freezing. Our alkadiene modified rubbers maintain high elasticity down to -196°C, preventing stress fractures and system failure.
Equipped with high flow-resistance matrices, Kingflex open-cell soundproofing boards reduce transmission loss in machinery housing, engine rooms, and ventilation systems in high-occupancy hospitals, hotels, and schools.
Select the correct specifications for your mechanical installations:
We supply a wide range of specialized materials, ensuring compatibility with diverse architectural project requirements:
Our commitment to quality control is backed by extensive certifications. Kingflex products undergo verification tests in our R&D laboratory to comply with safety and environmental codes in key global jurisdictions.
Our physical testing protocols check the following key values: flame propagation indexes under BS 476 (Part 6 and 7), combustion safety ratings via UL94, hazardous substance limits under RoHS and REACH, and water absorption performance using ASTM test procedures. These steps ensure our products deliver reliable insulation performance in high-humidity commercial, aerospace, and energy infrastructure installations.
A key indicator of reliable manufacturing is real-world performance feedback and transparent client interactions. We export our products globally, maintaining collaborative communication with international distributors, construction firms, and thermal consultants to ensure product quality and supply chain transparency.
These verifications showcase our focus on providing high-performance products and reliable service. With 8 specialized R&D engineers, 6 export sales agents, and 230 manufacturing staff, Kingflex ensures technical support, stable order processing, and comprehensive quality assurance for every project.
A visual tour of our production floor, showing our continuous extrusion lines, curing operations, and automated packaging lines.
Find technical answers regarding the performance, chemical properties, and applications of our products:
Elastomeric rubber foam insulation is primarily engineered for HVAC ductwork insulation, commercial chilled/hot water line networks, architectural building wall/roof cavities, industrial pipeline cold conservation, and acoustic isolation systems. Its closed-cell geometry prevents thermal bridging and condensation in high-moisture air environments.
Yes. Our insulation materials feature fire-retardant compound chemistry that meets global building safety codes. This includes compliance with BS 476 Part 6 (Class 0 rating for low propagation energy) and Part 7 (Class 1 rating for surface spread of flame), alongside UL94 V-0 flame-retardant ratings.
Elastomeric Rubber Foam features a flexible, closed-cell polymer structure with a built-in water vapor barrier, making it suitable for HVAC, chilled water lines, and outdoor environments. Rock Wool is a fibrous mineral structure that handles higher temperatures (up to 650°C), but it lacks vapor resistance and requires an external protective cladding to prevent moisture absorption.
Yes. We offer OEM/ODM services, including customization of sheet thicknesses (6mm to 50mm), pipe inner diameters, colors (e.g., green or gray), integrated self-adhesives, and composite protective facings like aluminum foil or glass cloth.
Our products comply with major global certification bodies, including BS 476, CE, REACH, RoHS, UL94, and ASTM E84, ensuring safety and performance compliance for international projects.
Yes. Every batch of Kingflex rubber foam sheets and tubes has manufacturing codes and quality tracking tags, enabling complete traceability from the raw material stage to the final shipped product.
We supply rubber foam sheet rolls in thicknesses ranging from 6mm to 50mm, enabling single-layer installation for high-condensation designs without requiring double laminations.
Under typical indoor operating conditions and with proper installation, Kingflex products provide a service life of 10 to 15 years, maintaining thermal efficiency and structural integrity.
Explore our specialized elastomeric foam tubes, high-thickness sheets, and foil-faced rolls:
Kingflex