Kingflex
Explore our wholesale line of advanced elastomeric foam materials engineered for commercial HVAC installations, cryogenic systems, and architectural sound reduction projects.
In today’s heavy industrial, marine, and construction sectors, mitigating thermal loss while controlling unwanted structure-borne and airborne acoustics is critical. Global procurement officers face stringent regulatory codes regarding sound transmission class (STC), vibration damping, and strict flame spread standards. From HVAC ductwork in hyper-scale data centers to piping systems in chemical processing plants, specialized rubber insulation is critical.
As a leading supplier, Kingflex Insulation Co., Ltd. offers customized acoustic solutions that combine chemical-resistant synthetic polymers with high-density physical dampening properties. By utilizing both NBR/PVC open-cell formulations for sound absorption and closed-cell systems for thermal barrier integration, we provide contractors with single-source efficiency that reduces logistics costs and simplifies installation.
"High-density elastomeric materials function as a sound transmission barrier by converting acoustic pressure waves into mechanical heat energy within their cellular matrix."
Our heavy manufacturing infrastructure is designed to fulfill large-scale commercial and national infrastructure projects with reliable quality control and on-time international delivery.
Established under the Jinwei Group (which pioneered thermal insulation systems since 1979 as the first major insulation manufacturer north of the Yangtze River), Kingflex has grown into a leading developer of advanced acoustic elastomer products.
Operating five large-scale automated assembly lines in Dacheng, China—known globally as a hub for green building materials—our production processes focus on reducing energy consumption and carbon emissions. We support our manufacturing processes with a dedicated R&D facility staffed by eight specialized engineers, ensuring our products comply with complex building regulations around the world.
Providing specialized materials designed to meet the strict thermal, fire-safety, and acoustic requirements of modern commercial infrastructure.
Reduces high-frequency airflow noise and fan vibration within sheet metal ducts. Prevents thermal transfer and external condensation.
Maintains process temperatures from -40°C up to 105°C. Features low thermal conductivity to protect piping systems from freeze-thaw cracking.
Designed for concrete wall, ceiling, and subfloor layering in high-occupancy structures such as hotels, commercial malls, and hospitals.
A detailed breakdown of the mechanical, physical, and environmental properties of our elastomeric NBR/PVC insulation sheet rolls and pre-formed piping tubes.
| Parameters | Standard Rating / Material Properties |
|---|---|
| Material Composition | Premium Nitrile Butadiene Rubber (NBR) / PVC Blend |
| Thickness Range | 6mm to 50mm (Customizable options available) |
| Density Range | 40 to 55 kg/m³ for optimal acoustic performance |
| Service Temp. | -40℃ to +105℃ (Suitable for extreme environments) |
| Closed Cell Rate | >98% cell structural consistency |
| Compression Resilience | >80% recovery under standard structural stress |
| Thermal Performance | Low heat conductivity + High moisture resistance factor |
| Parameters | Standard Rating / Material Properties |
|---|---|
| Material Composition | Co-extruded NBR/PVC flexible elastomeric foam |
| Thickness Range | 9mm, 13mm, 19mm, 25mm, 32mm up to 40mm |
| Inner Diameter (ID) | 6mm to 114mm (Compatible with standard piping) |
| Density Range | 40 to 55 kg/m³ matching global industrial designs |
| Moisture Absorption | Extremely low vapor permeability to prevent corrosion under insulation (CUI) |
| Flame Retardancy | Self-extinguishing, complies with BS 476, UL94 Class V-0 |
| Traceability | Full batch tracking code applied to outer surfaces |
To maintain compliance across different jurisdictions, our products undergo rigorous testing by third-party laboratories. Kingflex insulation systems comply with British Standards (BS 476), CE markings, REACH, RoHS, UL94, and ASTM fire testing guidelines.
Class 0 / Class 1 fire spread index compliance ensures security in public institutions, rail transit networks, and high-rise commercial structures.
Comprehensive material tracking is applied from raw material input to the final extruded foam roll, ensuring batch-level quality control.
B2B client feedback showing the performance and reliability of our insulation systems across various projects.
Technical guidance and answers to common integration questions from engineering teams, project managers, and distribution partners.
It is mainly used for HVAC air duct lining, mechanical ductwork wrapping, structural plumbing, and building wall/basement systems. Its properties make it effective for cold line insulation, preventing condensation, and reducing low-to-mid frequency airborne and structure-borne noise.
Yes. Our rubber foam insulation materials contain flame-retardant additives. They are self-extinguishing and meet international safety standards, including BS 476, UL94 Class V-0, and ASTM flammability metrics.
Rubber foam is a flexible, closed-cell, moisture-impermeable material that functions as a vapor barrier, making it suitable for HVAC systems and cold line insulation. Rock wool is a high-density, fibrous material designed for high-temperature applications and fire containment barriers.
Yes. We offer OEM manufacturing services to customize product thicknesses, inner diameters, density targets, surface facing materials (such as aluminum foil), and self-adhesive backings to meet specific project guidelines.
Our products comply with BS 476 (Class 0 and Class 1), CE, REACH, RoHS, UL94, and ASTM standards, supporting compliance in international markets.
Yes. Our quality control system assigns batch numbers to all raw material runs and extrusion cycles, allowing for traceability from production to installation.
We manufacture rubber foam sheets and rolls in thicknesses ranging from 6mm to 50mm, allowing you to select the appropriate option based on thermal calculations and space constraints.
Under recommended operational conditions within the service temperature limit of -40℃ to 105℃, our elastomeric products have a service life of 10 to 15 years.
Visual overview of our factory operations, highlighting our quality testing equipment and automated warehousing systems.
The insulation industry is moving toward low-carbon footprints, higher chemical stability, and improved low-frequency acoustic attenuation. Traditional fibrous open-core systems are increasingly being replaced by engineered NBR/PVC closed-cell foams. These modern materials do not shed micro-fibers, addressing indoor air quality (IAQ) concerns in public facilities.
Our upcoming product generation focuses on incorporating bio-based polymers to reduce dependency on petrochemical components. Additionally, we are working to integrate acoustic decoupling backings directly onto pre-formed piping tubes. This design aims to simplify installation steps, reducing labor costs and lowering the risk of thermal bridging on cold water piping systems.
A closer look at our high-density acoustic board production runs, raw foam extrusion rolls, and secondary thermal coatings.
Browse our catalog of acoustic insulation boards, industrial pipe covers, and high-performance cryogenic wrapping products.
Get in touch with our technical sales division to request a detailed pricelist, review certification documents, or coordinate OEM product configurations for your project.
Contact Engineering Support