Kingflex
Explore Kingflex's core industrial-grade elastomeric insulation formulations, optimized for superior thermal resistance and moisture-impermeable performance.
An in-depth chemical and thermodynamic analysis of NBR/PVC matrix performance under demanding operational environments.
Kingflex closed-cell elastomeric rubber foam insulation leverages an advanced synthetic polymer matrix composed of Acrylonitrile-Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC). During high-pressure thermal expansion, a dense, uniform cellular structure is created, where more than 98% of the cells remain fully closed. This microcellular structural morphology is critical: it locks dry gas inside individual micro-cavities, preventing convective heat transfer.
Unlike open-cell fibrous structures (such as fiberglass or rock wool) that lose physical shape and dry-air thermal properties when exposed to environmental moisture, Kingflex maintains a exceptionally low thermal conductivity (≤ 0.034 W/m·K at 0°C) over long operational lifespans. By restricting water vapor molecule migration, the thermal insulation performance does not degrade, preserving plant efficiency and reducing operational cost.
Water vapor diffusion resistance factor (μ) ≥ 10,000. Under high relative humidity conditions, this prevents moisture penetration, halting condensation cycle failures and safeguarding mechanical integrity.
Fig 1: Kingflex Automated NBR/PVC Extrusion and Foaming Assembly Line
Built upon 40+ years of industrial leadership, Kingflex guarantees global distribution through heavy-duty manufacturing infrastructure.
Fig 2: Our manufacturing base in Dacheng, China - Green Building Material Capital
Kingflex Insulation Co., Ltd. was established under the structural umbrella of the Jinwei Group (also known as Kingway Group), which has a heritage spanning back to 1979. As the very first professional manufacturer of thermal insulation materials north of the Yangtze River, Kingway Group pioneered industrial thermal protection in China. Kingflex is now a premier manufacturing and trading combo, concentrating specifically on high-efficiency, environment-friendly elastomeric insulation systems.
Our advanced manufacturing compound houses 5 large automatic assembly lines, generating an annual capacity exceeding 600,000 cubic meters. Kingflex is designated as an authorized manufacturing enterprise for large-scale energy projects by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Our scientific R&D division has continuous testing access to advanced laboratories, ensuring every batch conforms directly to BS 476, CE, REACH, ROHS, UL94, and ASTM requirements.
Meet our engineers and researchers behind the chemical configurations of Kingflex Elastomer systems.
Kingflex retains 8 professional engineering minds focused entirely on physical-chemical polymer adjustments. They configure formulas to withstand thermal extremes while optimizing flame-retardant performance under BS 476 protocols.
Our sales force comprises 6 seasoned international trade representatives. They coordinate localization procedures, handle ASTM / BS standard alignment, and manage custom clearances across 66 countries.
Backed by 230 manufacturing specialists operating inside the factory, Kingflex achieves tight consistency in density distribution (40-55 kg/m³) across all sheet and pipe products.
Explore the physical characteristics, material dimensions, and technical thresholds of our NBR/PVC closed-cell line.
Engineered specifically for flat duct sheets, tank walls, large-bore utility pipelines, and structural industrial applications. The uniform cell size minimizes structural thermal transfer, providing structural stability.
Designed for quick slip-on installation on copper pipe, carbon steel pipes, and custom copper/brass lines. Ensures deep anti-freezing properties and high resistance to condensation in chilled water systems.
| Performance Characteristic | Reference Testing Standard | NBR/PVC Product Rating | Industrial Advantage |
|---|---|---|---|
| Thermal Conductivity (0°C) | ASTM C518 / ISO 8301 | ≤ 0.034 W/(m·K) | Minimizes BTU/watt loss during dynamic fluid transit. |
| Water Vapor Permeability | ASTM E96 / BS EN 12086 | μ Factor ≥ 10,000 | Locks environmental humidity out, preserving system longevity. |
| Fire Retardancy Rating | BS 476 Part 7 / UL 94 | Class 0 / Class 1 / V-0 | Self-extinguishes instantly without toxic smoke emission. |
| Compression Recovery | ASTM D1056 | ≥ 80% | Prevents insulation flattening at hangers and pipe joints. |
| Density Limits | ISO 845 | 40 - 55 kg/m³ | Provides the optimal balance of air trapping and structural strength. |
Kingflex elastomeric systems are deployed in global projects requiring strict thermal control and high mechanical integrity.
Lined and wrapped around rectangular and circular duct networks in commercial real estate, preventing thermal bridging and condensation in high-humidity zones.
Specialized NBR formulations manage thermal flow in cryogenic chemical transport, preventing extreme ice build-up and structural stress cracks.
Applicable to roofs, floor basements, and modern wall assemblies to reduce sound bounce and control convective heat flow.
Resistant to chemical vapors and acid-alkali misting in chemical refinery pipes, maintaining insulation value despite aggressive ambient conditions.
Withstands outdoor UV exposure (when properly coated) and high water temperatures up to 105°C, reducing water heater recovery cycles.
Wraps large storage silos, settling tanks, and mechanical steam separators to control energy loss in heavy engineering yards.
Continuous testing ensures zero-defect batches. Our technical division controls density, elasticity, and fire endurance parameters.
Density & Compression Tester
Thermal Conductivity Analysis
Flamboyance & Smoke Chamber
Kingflex materials meet strict global regulations, passing verification checks across multiple testing bodies.
Our products comply with high fire-safety and toxicity metrics. In construction, materials must be self-extinguishing and generate minimal smoke.
Kingflex products have successfully secured BS 476 Part 6 & 7 (Class 0 / Class 1), CE mark compliance, REACH and RoHS compliance (free of brominated flame retardants), UL 94 (Class V-0), and ASTM E84 surface burning evaluation.
Furthermore, Kingflex implements a fully digitized material batch traceability system. Every shipping box is labeled with batch codes linking back to raw material suppliers, precise oven expansion settings, and R&D laboratory evaluation dates.
See verified chat receipts showcasing international order confirmations, customized specifications coordination, and shipping updates.
In addition to our core rubber foam products, Kingflex delivers specialized glass wool, rock wool, and composite thermal solutions.
PVC Coated Tube
Alfoil Faced Roll
Rock Wool Board
Glass Wool Blanket
Gain insights from Kingflex's engineering and supply chain analysis for optimal planning.
As standard building codes adopt net-zero emissions limits, HVAC equipment demands thicker, higher density NBR/PVC closed-cell structures. Conventional fiberglass loses market share due to air quality hazards and moisture absorption. In contrast, elastomeric foam provides long-term thermal resistance and a mold-free profile.
Sourcing departments look beyond FOB unit prices, focusing on cargo density optimization. Due to the high volume-to-weight ratio of elastomeric products, Kingflex utilizes high-capacity vacuum compression packaging for rolls, saving up to 35% in sea-freight costs per container.
Kingflex is actively engineering bio-sourced elastomeric polymers that eliminate petroleum dependencies while keeping traditional fire safety ratings. We are also designing advanced self-adhesive layers with higher thermal shear resistance for simplified field installation.
Explore detailed images and links to our specialist insulation models, engineered for distinct temperature levels.
Find technical answers compiled by Kingflex's engineering and application consulting department.
It is engineered for thermal control on HVAC ducts, air conditioning piping networks, building building envelopes, industrial process lines, and acoustic sound insulation projects. Its closed-cell geometry prevents surface condensation and thermal gain.
Yes. Kingflex rubber foam is formulated with high-performance flame-retardant chemistry. The material self-extinguishes upon flame removal and does not create burning droplets, satisfying BS 476 (Class 0 & 1), UL 94 (V-0), and ASTM E84 testing protocols.
Elastomeric foam features a flexible, closed-cell polymer grid that blocks moisture and water vapor without a vapor barrier jacket, making it optimal for chilled pipelines. Mineral rock wool features an open-fibrous structure suited for high-temperature boilers and heavy industrial furnaces.
We offer extensive OEM/ODM configurations. Standard thicknesses span 6mm to 50mm for sheet rolls, and 9mm to 40mm for pipe tubes. Internal tube diameters (ID) can be tailored from 6mm to 114mm.
Under normal indoor climates and recommended installation guidelines, Kingflex rubber foam keeps its full thermal insulation value for 10 to 15 years without material decay.
Explore Kingflex's advanced formulations for high-density soundproofing, cryogenic application, and composite pipe protection.
