Kingflex
Premium grade closed-cell rubber elastomeric materials and complementary high-bonding adhesive solutions engineered for structural integrity.
In mechanical engineering and HVAC installation, thermal insulation is only as robust as its weakest joint. As a premier China insulation glue supplier, Kingflex understands that maintaining a 100% airtight vapor barrier is critical to prevent condensation, pipeline corrosion under insulation (CUI), and thermal loss. The specialized insulation adhesive is formulated utilizing polychloroprene (neoprene) elastomers and synthetic resins to generate high initial tack and ultimate shear strength.
Our formulations are explicitly designed to bond NBR/PVC elastomeric rubber foam sheets and pipes to metallic pipelines, ducts, and complex mechanical geometries. Once dry, the adhesive forms a flexible, water-resistant interface that mimics the physical elasticity of the rubber foam insulation itself. This ensures that thermal contraction and expansion cycles (-40°C to +105°C) do not compromise the joints.
Years of Legacy
Annual Capacity (m³)
Global Export Markets
Auto Assembly Lines
Analyzing key advancements in polymeric bonding, compliance, and material engineering.
Modern engineering projects strictly mandate LEED and BREEAM certifications. Adhesive formulations are transitioning from toluene-based solvents to eco-friendly, low-odor, low-VOC options that comply with stringent REACH, RoHS, and UL94 emission regulations.
With the surge in LNG infrastructure and cold chain pharmaceutical logistics, synthetic rubber sheet adhesives must survive extreme cryogenic states (-200°C) without micro-cracking or losing cohesive bond integrity.
On-site labor efficiency determines project profitability. Instant green-strength and short open-time window adhesives accelerate installation of NBR rubber foam insulation tubes and sheets on high-throughput assembly sites.
International mechanical engineering consultants, EPC contractors, and global HVAC distributors evaluate thermal insulation systems based on rigorous life-cycle cost analysis and international safety codes. Kingflex is engineered to meet and exceed global demands:
Explore Kingflex's cutting-edge production base in Dacheng, China—the green-building capital.
Our manufacturing and R&D facility operates under a Factory 4.0 architecture, optimizing batch consistency and high volume yield. Kingflex has established 5 large automated production assembly lines capable of yielding over 600,000 cubic meters of high-density and low-density rubber foam insulation annually.
Our operational model is deeply integrated with energy saving and carbon reduction initiatives designated by the Ministry of Energy, Ministry of Chemical Industry, and Ministry of Electric Power. By managing our complete chemical blending operations locally, we provide a unified supply chain solution—delivering the precise chemistry of insulation adhesive needed to bond our elastomeric sheets and tubes with zero compatibility issues.
| Metric | Value / Parameter | Global Standards |
|---|---|---|
| NBR/PVC Foam Density | 40 - 55 kg/m³ | ASTM D1667 / ISO 845 |
| Thermal Conductivity | ≤ 0.034 W/(m·k) at 0°C | ASTM C518 / ISO 8301 |
| Water Vapor Permeability | ≥ 1.0 x 10^-11 g/(m·s·Pa) | ASTM E96 / BS EN 12086 |
| Service Temperature Limit | -40°C to +105°C | BS EN 14706 / ASTM C411 |
Precise parameters for designing HVAC systems, industrial piping layouts, and structural insulation projects.
Material Structure: High-density NBR/PVC closed-cell elastomer.
Thickness Options: 6mm, 9mm, 13mm, 16mm, 19mm, 25mm, 32mm, 40mm, 50mm.
Primary Performance Benefits: Uniform cell structure, reliable moisture barrier performance, fast compression resilience (over 80%), and robust flame retardant chemistry.
Wide-area HVAC square air duct lining, acoustic partition dampening, heavy petrochemical storage tanks, marine transport wall insulation, and cleanroom ceiling panels.
Material Structure: Extruded elastomeric rubber compound.
Wall Thickness: 9mm, 13mm, 19mm, 25mm, 32mm, 40mm.
Inner Diameter (ID) Range: 6mm up to 114mm.
Thermal Conductivity Factor: Low thermal bridge design minimizes pipeline condensation and freeze-thaw cracking hazards.
Central chiller chilled water line routing, industrial hot water service lines, solar thermal water pipes, marine copper refrigeration pipelines, and sanitary drainage networks.
Established under the parent entity, Jinwei Group, which has a manufacturing history of more than 40 years dating back to 1979, Kingflex was founded as a cornerstone thermal insulation producer. Over the years, we grew to become the pioneering manufacturer of green insulation materials north of the Yangtze River.
Our elite engineering unit operates a dedicated Research and Development department housing 8 professional materials scientists. They work alongside 6 experienced international sales executives and over 230 highly skilled factory technicians to support supply chain demands in over sixty-six countries.




Verifiable compliance to international standards and proof of successful implementation.
From municipal HVAC systems to chemical pipeline retrofits, Kingflex products have been specified in landmarks worldwide. We maintain complete product traceability, allowing engineers to verify raw material sources and mechanical compliance metrics from factory to installation site.






Our commitment to speed and technical clarity is evident in our customer interaction records. Below are visual records of our customer relations and communication history, demonstrating rapid order processing and high global client satisfaction.


































Detailed technical specifications, certification, safety validation, and insulation glue application queries.
Premium options for soundproofing, cryogenic applications, heat resistant tubing, and fiber glass blankets.