Kingflex
Engineered rubber-foam sheets, tubes, and cryogenic systems certified to global industrial and structural fire-safety performance standards.
In modern industrial, commercial, and cryogenic systems, managing sound energy transmission and heat transfer is critical for system longevity, energy conservation, and structural integrity. Kingflex Insulation Co., Ltd. is a leading manufacturer specializing in closed-cell and open-cell elastomeric thermal and acoustic insulation materials.
With research roots dating back to the establishment of the Jinwei Group in 1979—the first manufacturer of thermal insulation materials north of the Yangtze River—Kingflex provides high-density sound absorption insulation products designed to minimize heat conduction, restrict sound waves, and prevent condensation on systems operating under thermal extremes.
Our core mission focuses on energy conservation and consumption reduction. Through a collaborative strategy involving material science R&D, precision automated manufacturing, and engineering support, Kingflex delivers technical solutions for challenging insulation designs.
The demand for advanced sound absorption and thermal insulation materials is growing worldwide. Urbanization, industrialization, and stricter structural fire safety and environmental policies have led to increased demand for high-efficiency elastomeric foam products.
In commercial building designs, sound pollution from high-capacity HVAC ductwork, chiller systems, and plumbing shafts requires reliable sound attenuation. In the industrial sector—particularly petrochemical processing, marine engineering, and power generation—insulation systems must withstand extreme thermal shifts, corrosive elements, and continuous mechanical vibrations. Kingflex supplies high-density NBR/PVC elastomeric foams that serve as barriers to sound and temperature transfer, preventing CUI (Corrosion Under Insulation) and protecting complex mechanical infrastructure.
Kingflex operates its research, development, and manufacturing divisions in Dacheng, China—a hub for building materials. Our factory holds an annual production capacity of over 600,000 cubic meters across 5 automatic assembly lines.
This localized manufacturing base combines cost-efficiency with high quality standards. Utilizing advanced continuous vulcanization machinery and automated foaming technology, we maintain consistent density, cell structure, and fire retardancy across every batch. Our high volume operations reduce lead times, enabling us to support large-scale global infrastructure projects with customized specifications.
To assist engineering and procurement professionals in evaluating compatibility, we manufacture NBR/PVC elastomeric insulation materials to strict performance criteria:
| Performance Metric | Standard Specification / Value | Testing Standard |
|---|---|---|
| Material Base | NBR (Nitrile Butadiene Rubber) / PVC Blend | ASTM D1667 |
| Foam Structure | Closed-cell (>98% cell density) & Open-cell (Acoustic grade) | ASTM D1056 |
| Density Range | 40 to 55 kg/m³ | ASTM D1622 |
| Thermal Conductivity (k) | ≤ 0.034 W/(m·K) at 0°C | ASTM C518 / ISO 8301 |
| Moisture Permeability | ≥ 1.0 x 10¹⁰ g/(Pa·s·m) | ASTM E96 |
| Service Temperature Range | -40°C to +105°C (Cryogenic variants down to -196°C) | ASTM C411 |
| Fire Safety Class | Class 0 (BS 476 Part 6/7), V-0 (UL94) | BS 476 / UL94 |
Different regions and industries present unique environmental challenges. Our products are engineered to perform reliably across a range of climates and layouts:
We trace each batch from raw material processing to final packaging, ensuring consistency across thermal conductivity, density, and cell structure.
Investing in material formulation research to develop lighter, safer, and more durable insulation products.
Our team of 8 specialist R&D engineers focuses on refining the chemical resistance, flame retardancy, and smoke toxicity profiles of our NBR/PVC compound formulations.
Continuous foaming, cooling, and automated dimensional cutting ensure that all products comply with uniform technical specifications, reducing product waste.
From initial design consultations to on-site installation guidance, our team provides technical support to minimize installation errors.
Comparing performance properties across key insulation products manufactured by Kingflex.
Our elastomeric sheets are designed for large surface areas like commercial ductwork, machinery housings, and storage vessels.
Pre-formed elastomeric tubes designed to fit pipeline geometries, providing thermal resistance and protecting against pipe freezing.
Multi-layered composite designs intended for industrial systems carrying low-temperature media, such as liquefied gases.
Browse our core line of elastomeric foam piping, sheets, and complementary rock wool insulation products.
Detailed technical advice concerning elastomeric insulation performance, customization, and factory operations.
Our products are utilized in commercial infrastructure, oil and gas terminals, and HVAC systems worldwide.
Prevented condensation and reduced pipeline noise transmission in a major commercial district development.
Helped maintain target process temperatures, improving system energy efficiency.
Multi-layered composite cryogenic foam system installed at a gas terminal.
Direct supply options for global insulation distributors, contractors, and engineering partners.
