Explore our industrial-grade elastomeric foam tubes, sheets, and cryogenic thermal barrier systems.
Unlocking critical energy efficiency metrics, fire-safety compliance, and long-term durability in HVAC/R design.
In modern HVAC/R systems, chilled water and refrigerant piping operate at temperatures significantly below ambient dew point. Without an effective vapor barrier and thermal insulation, atmospheric humidity condenses on the cold surface, triggering a cascade of failures: micro-biological growth (mold), reduced thermal efficiency, and structural degradation through Corrosion Under Insulation (CUI).
Traditional open-cell insulation relies heavily on external vapor jackets. However, any mechanical rupture in the outer jacket leads to total saturation of the insulation core. Elastomeric closed-cell foam insulation, manufactured with NBR/PVC elastomer technology, addresses this failure mode. By integrating billions of micro-enclosed gaseous pockets, the material acts as a continuous, self-contained water vapor barrier. The high water vapor diffusion resistance factor (μ ≥ 10,000) guarantees that the insulation maintains its design thermal conductivity (λ) throughout its entire service life.
As global regulations (such as ASHRAE 90.1 and EU Energy Performance of Buildings Directives) tighten, the requirements for low thermal conductivity and zero-leakage vapor barriers have transitioned from operational recommendations to strict legal compliance.
Kingflex Insulation Co., Ltd. is a leading professional manufacturing and trading combo specializing in premium-tier thermal insulation products. Located in Dacheng, China—widely recognized as the green building materials capital—we operate as a modern, energy-saving, and environmentally conscious enterprise that integrates product design, R&D, mass production, and direct global distribution.
Our core operating philosophy centers around systemic energy conservation and consumption reduction. We deliver engineered insulation systems through proactive consultant services, structural R&D, on-site installation guidance, and dedicated post-sale technical support, driving performance benchmarks across the global building service sector.
Established under the Jinwei Group, which boasts a rich history of over 40 years, Kingflex inherits industrial experience that dates back to the group's founding in 1979. Jinwei Group was the pioneer manufacturer of thermal insulation materials north of the Yangtze River, creating an engineering legacy of quality and stability.
Today, Kingflex operates 5 large-scale automated assembly lines. With an annual production capacity exceeding 600,000 cubic meters of premium elastomeric rubber foam sheets and pipes, we guarantee supply-chain reliability for major infrastructure developments, municipal projects, and international OEM procurement agreements.
Engineered for extreme performance across commercial HVAC installations and industrial cryogenic systems.
| Property / Characteristic | Black Rubber Foam Sheet Roll | Black Rubber Foam Insulation Pipe | Testing Standards Reference |
|---|---|---|---|
| Base Polymer Material | NBR/PVC Elastomer Blend | NBR/PVC Elastomer Blend | ASTM C534 / ISO 9001 |
| Closed Cell Content | Over 98% | Over 98% | ASTM D2856 |
| Density Range | 40 - 55 kg/m³ | 40 - 55 kg/m³ | ASTM D1622 |
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.034 W/(m·K) at 0°C | ASTM C177 / C518 |
| Service Temperature Range | -40°C to +105°C (Cryogenic: -200°C available) | -40°C to +105°C | ASTM C411 |
| Water Vapor Permeability Resistance (μ) | ≥ 10,000 | ≥ 10,000 | BS EN 12086 / ASTM E96 |
| Fire Propagation Safety Rating | Flame retardant, self-extinguishing | Flame retardant, self-extinguishing | BS 476 Part 7 Class 1 / UL 94 V-0 |
| Compression Resilience | > 80% recovery rate | > 80% recovery rate | ASTM D1667 |
Our dedicated R&D center continuously optimizes raw material formulations. By incorporating customized flame retardants, anti-aging compounds, and specialized rubber modifiers, we ensure that Kingflex elastomeric foam maintains structural stability even under intense mechanical vibration and UV exposure.
Every batch of Kingflex AC pipe insulation foam undergoes strict inspection before dispatch. Our products hold certificates under major domestic and international testing agencies, ensuring smooth building-code approvals for your design projects.
From commercial HVAC infrastructure to extreme cryogenic cold chains, our solutions guarantee energy efficiency.
Central air conditioning systems require precise insulation to prevent condensation and minimize energy losses. Kingflex NBR/PVC insulation pipe provides a seamless snug fit on copper pipes and steel mains. The low thermal conductivity (λ ≤ 0.034 W/m·K) reduces energy consumption, allowing commercial buildings to meet LEED and BREEAM certifications.
Operating in ultra-low temperatures requires insulation systems capable of handling extreme thermal stress without cracking. Our cryogenic flexible elastomeric foam insulation system is designed to handle cold-chain requirements, liquid gas storage pipelines, and petrochemical process loops, mitigating structural thermal bridging effectively.
In hotels, hospital wards, and corporate offices, acoustic noise generated by high-velocity airflow inside ducts can cause significant issues. Our double-duty sound absorption thermal insulation sheet helps minimize airborne sound transmission, providing a quieter indoor environment while managing thermal performance.
Reviewing our real-world site implementations and high-thickness elastomeric sheet integrations.
An inside look at our 5 automated production assembly lines yielding over 600,000 m³ annually.
We work closely with global engineering partners, procurement departments, and construction contractors. We maintain open communication and provide transparent, real-time tracking, ensuring our clients receive full traceability for every production batch we ship.
Our customer service representatives and sales managers are trained to assist you with everything from initial volume calculations to shipping logistics, ensuring a smooth procurement process.
Our employees are experienced and dedicated, sharing a vision to provide first-class service to our clients. Our structured human resources division includes:
Explore standard dimensions, sizing charts, and key advantages across our rubber and wool catalogs.
Our NBR/PVC elastomeric sheet roll provides efficient insulation for large-diameter ducts, tanks, and structural components.
Designed for easy installation on copper and steel pipes, providing a secure fit to prevent thermal bridging.
Explore other specialized insulation materials we manufacture to meet diverse project requirements.
Detailed technical answers addressing common installation and specifications queries from engineering teams.
Review the rest of our product catalog for specialized cryogenic and low-density insulation sheets.
Kingflex
