Kingflex
Kingflex
Select premium 19mm flexible elastomeric sheets and related system accessories direct from our ISO 9001 certified production lines.
Within mechanical design engineering, the 19mm thickness (typically designated as 3/4” nominal) serves as a thermodynamic sweet spot for vapor control and thermal resistance. Flexible sheets engineered with NBR/PVC closed-cell foam technology are explicitly optimized to match standard dew-point constraints in high ambient relative humidity conditions.
By utilizing a micro-cellular structure, the 19mm elastomer retains a low and stable thermal conductivity value (≤0.034 W/(m·K) at 0°C). This profile functions dynamically to counteract surface condensation on chilled water loops, refrigerant pipelines, and air distribution ductworks, preventing structural mold and galvanic corrosion under insulation (CUI).
19mm elastomeric sheets exhibit a high water vapor diffusion resistance index (μ ≥ 10,000), protecting structural HVAC cores from thermal degradation even when exposed to severe atmospheric gradients.
How high-capacity NBR/PVC formulation engineering shapes clean energy and low-carbon infrastructure globally.
Modern building codes require precise thermal resistance values to align with net-zero environmental initiatives. 19mm flexible sheets are integral to reducing HVAC fan load and chiller consumption in data centers, high-traffic commercial zones, and clinical healthcare complexes.
At ultra-low temperatures down to -200°C, regular NBR/PVC requires multi-layered insulation arrays. Our flexible cryogenic systems protect cold-energy structures, LNG carrier piping, and chemical treatment plants from extreme thermal shocks and material fracturing.
Heavy industry relies on reliable piping to deliver continuous chemical processes. Our closed-cell rubber materials resist corrosion-causing water ingress and dynamic high-pressure environments, reducing maintenance cycles in offshore platforms and chemical refineries.
Kingflex Insulation Co., Ltd. represents a unified manufacturing and export consortium for world-class industrial thermal insulation. Our R&D and continuous production divisions operate in Dacheng, China—a hub for green building technologies.
Formed under the Jinwei Group, which possesses a rich manufacturing history dating back to 1979, Kingflex stands as a pioneer of advanced elastomeric insulation north of the Yangtze River. The company integrates design consultation, manufacturing, on-site supervision, and customized post-sale service.
At present, Kingflex operates five large automated assembly lines, with an annual production capacity of more than 600,000 cubic meters. We are designated as a strategic manufacturing enterprise by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Our team is composed of seasoned professionals, including 8 dedicated senior engineers in our R&D Department, 6 international customer managers, and 230 workers in the production department.
Our production facilities utilize continuous extrusion foaming technology. Every run is monitored via PLC systems, ensuring consistency in cell sizes, density, and moisture resistance across our flexible sheets.
Technical reference matrix for the 19mm NBR/PVC elastomeric thermal insulation sheets.
| Property | Value / Performance Range | Testing Standard Reference |
|---|---|---|
| Material Composition | Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) blend, non-fibrous | - |
| Available Thicknesses | 6mm to 50mm (Includes Standard 19mm / 3/4") | ISO 3801 / ASTM C534 |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0 °C | ASTM C177 / BS EN ISO 12667 |
| Moisture Resistance (μ) | ≥ 10,000 (Closed-cell rate > 98%) | BS EN 12086 / ASTM E96 |
| Service Temperature | Standard: -40 °C to 105 °C / Cryogenic range down to -200 °C | ASTM C411 / EN 14706 |
| Reaction to Fire | Class 0 / Class 1 / V-0 self-extinguishing | BS 476 Parts 6 & 7, UL 94, EN 13501-1 |
| Density | 40 - 55 kg/m³ | ASTM D1622 |
Tested and certified for international project requirements.
Thermal Conductivity Testing
Vapor Permeability Verification
Micro-cell Integrity Inspection
True interactions showing our responsiveness, transparency, and B2B client alignment.
Detailed standard parameters and application profiles for sheets and pipes.
Designed for large surface areas, ducts, and tanks, our sheets provide seamless insulation that minimizes thermal bridging.
| Material Type | NBR/PVC elastomer |
| Thickness Range | 6mm - 50mm (including 19mm) |
| Foaming Density | 40 - 55 kg/m³ |
| Operational Temp | -40°C to 105°C |
Extruded to match domestic and industrial copper/steel tubing sizes, offering quick install times and durable joint performance.
| Inner Diameter (ID) | 6mm - 114mm |
| Insulation Thickness | 9mm - 40mm |
| Foaming Density | 40 - 55 kg/m³ |
| Operational Temp | -40°C to 105°C |
Over 600,000 cubic meters of annual output processed across automated manufacturing lines.
Our products are engineered to comply with regional fire and safety codes, including ASTM C534 Type I & II standards for North America, and BS 476 Class 0 ratings for commercial projects in the UK, Middle East, and APAC.
Our technical team provides customized solutions for extreme environments. This includes weather-resistant external coatings, high-density pipe supports, and custom 19mm sheets pre-applied with pressure-sensitive adhesives.
We are continuously researching and developing low-smoke, halogen-free (HF) formulations. Future initiatives focus on integrating bio-based elastomer components and expanding performance limits in cryogenics and high-pressure steam distribution.
Technical advice and specification guidelines for B2B procurement, design engineers, and site managers.
A: It is primarily specified to control heat flow and prevent surface condensation on HVAC air ducts, refrigeration lines, chiller piping, and industrial systems. Its sound-dampening characteristics also make it suitable for wall and equipment noise reduction.
A: Yes. Our formulations include built-in flame retardants, allowing them to meet BS 476 Class 0 and Class 1, UL 94 V-0, and ASTM flammability standards, ensuring code compliance for building interiors.
A: Rubber foam features a flexible, closed-cell structure with built-in moisture protection, making it ideal for cold systems and HVAC where condensation is a concern. Rock wool is a fibrous material suited for high-temperature applications and fire containment barriers, but requires a separate vapor barrier to prevent water ingress.
A: Yes. We offer comprehensive OEM services, including custom sheet dimensions, pre-applied adhesive backings, specialized external coatings, and custom-designed pipe insulation setups.
A: Kingflex products are certified to BS 476, CE, REACH, RoHS, UL 94, and ASTM standards. This ensures compatibility and compliance for international projects.
A: Yes. Every production batch is coded during manufacturing. This allows us to trace materials, processing conditions, and QC test records throughout the supply chain.
A: Our advanced continuous line can produce sheets ranging from 6mm to 50mm in thickness, with 19mm being a standard inventory size.
A: Under standard operating conditions and with proper installation, our materials offer a functional service life of 10 to 15 years.
Detailed catalog of NBR/PVC elastomeric formulations and high-density mineral fiber boards.
Select individual components below for technical specs, product datasheets, and installation guides.
Over 16 years of direct export experience supplying high-quality insulation materials globally.
