Select specialized thermal and acoustic barrier solutions engineered for extreme operational environments.
Thermal mitigation in modern architecture and heavy industry demands materials that transcend simple temperature resistance. In structural design and HVAC systems, managing thermal bridging, condensation control, and sound attenuation dynamically affects structural lifespan and energy metrics. Fibrous materials fail when exposed to humidity, while micro-cellular structures present in closed-cell elastomeric rubber foam maintain persistent insulation value throughout their lifecycle.
Kingflex Insulation Co., Ltd. represents a major advancement in manufacturing capability. We specialize in synthesizing elastomeric NBR and PVC structures that deliver high thermal efficiency. Our materials act as dual thermal/vapor barriers, preventing corrosion under insulation (CUI) and reducing energy loss in high-demand environments. Our annual manufacturing output exceeds 600,000 cubic meters, allowing us to supply large-scale projects globally.
Why mechanical consultants, engineering firms, and global distributors specify our products.
The closed-cell configuration prevents moisture absorption. Unlike fiberglass or rock wool, Kingflex maintains steady thermal performance even in high-humidity HVAC environments.
Engineered to self-extinguish when exposed to direct flames. Our formulations restrict lateral flame spread and suppress heavy smoke development, complying with global BS 476, ASTM, and UL standards.
The micro-cellular rubber matrix absorbs mechanical vibrations and structural noise, functioning as a reliable sound barrier for HVAC ductwork and utility systems.
Modern building construction requires insulation tailored to specific local climates and engineering environments:
1. Cold Storage and Industrial Process Cooling: Standard rubber insulation systems prevent thermal loss in chilled water loops, glycol distribution lines, and industrial food processing units.
2. Marine LNG and Cryogenic Terminals: Utilizing cryogenic elastomeric formulations (down to -200°C) reduces boil-off gas and controls moisture in maritime liquified natural gas transport.
3. High-Density HVAC Configurations: Applied in hospitals, retail centers, and server farms, preventing air duct condensation while damping noise in ceiling spaces.
Review the physical properties of our sheet rolls and pipe insulation products:
Thickness: 6mm - 50mm | Density: 40 - 55 kg/m³ | Temperature Range: -40℃ to 105℃ | Foams evenly and fully, closed cell rate over 98%.
Thickness: 9mm - 40mm | ID: 6mm - 114mm | Compression resilience over 80% | High moisture resistance factor, reduces pipe freezing risk.
Our production facilities are situated in Dacheng, China—a hub for green building material manufacturing. This geographic concentration gives us access to a reliable ecosystem of chemical raw materials, custom manufacturing machinery, and technical specialists.
Kingflex maintains raw material reserves and operates five large automatic production lines to ensure consistent output during energy fluctuations or supply chain disruptions. Close proximity to Tianjin and Qingdao ports facilitates efficient logistics for global ocean freight.
As the primary thermal division of the Jinwei Group (founded in 1979), Kingflex continues a 40-year industrial history. Our production capacity allows us to coordinate volume shipments and custom runs to align with project development timelines globally.
A visual overview of our continuous vulcanization ovens, extrusion operations, and warehousing facilities.
Our long-term R&D is focused on environmental compliance and material performance:
We are expanding production of our flexible halogen-free thermal pipe systems to meet strict building safety requirements in the European Union and Asia-Pacific regions.
Developing ultra-thin elastomeric insulation layers lined with silica aerogels to improve thermal insulation value in space-constrained industrial systems.
Deploying nitrogen and CO₂ gas injection processes to eliminate standard chemical blowing agents, reducing the environmental footprint of our products.
"Our engineering department operates an testing facility equipped to measure thermal conductivity under mechanical load, vapor transmission coefficients, and fire spread speeds. This testing helps ensure that our export shipments conform to global construction standards."
— Kingflex R&D Laboratory Director
Testing and certification documentation for international mechanical specifications.
Providing custom insulation configurations for major infrastructure projects worldwide.
District Cooling Network Installation
Condensation mitigation on outdoor 400mm supply lines.
Cleanroom HVAC Air Handling Unit
Anti-microbial, fiber-free internal lining for high-airflow ducting.
Subsea Pipeline Thermal Insulation
Heavy-duty rubber insulation for cold-glycol piping systems.
Petrochemical Process Piping
Dienes Cryogenic barrier systems for extreme low-temperature processes.




Continuous testing for thermal resistance, flame retardancy, and density control.
Conductivity Testing Bench
Oxygen Index Flammability Tester
Microcellular Analysis
Direct answers to questions regarding elastomeric specification, design limits, and ordering processes.

















Explore our specialized range for ultra-low temperature cryogenic environments and high-capacity industrial cooling.