Engineered to deliver exceptional thermal barriers, moisture mitigation, and sound absorption metrics under extreme operating environments.
Modern building construction and heavy industrial processes demand strict energy conservation principles. Nitrile Butadiene Rubber (NBR) blended with Polyvinyl Chloride (PVC) forms the benchmark for closed-cell elastomeric foam. The chemical engineering behind our manufacturing achieves an even cell structure with over 98% closed cells. This microscopic topography traps air in tiny uniform pockets, which significantly retards heat transfer.
The primary thermodynamic advantage of NBR/PVC is its incredibly low moisture vapor transmission. Water has a thermal conductivity approximately 24 times higher than static air. Thus, if moisture invades an insulation material, the thermal efficiency collapses. Our closed-cell rubber insulation maintains its low thermal conductivity (λ ≤ 0.034 W/(m·K) at 0℃) over its entire service life because it prevents water entry without requiring an external vapor barrier.
Accurate engineering specifications are crucial for procurement compliance. Below are the verified metrics for our wholesale elastomeric products.
| Parameter Class | Nitrile Sheet Specifications | Nitrile Pipe/Tube Specifications |
|---|---|---|
| Material Base | Premium Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) Polymer Blend | Premium Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) Polymer Blend |
| Thickness Range | 6 mm to 50 mm options | 9 mm to 40 mm options |
| Inner Diameter (ID) | N/A (Flat sheet/roll form) | 6 mm to 114 mm options |
| Density | 40 to 55 kg/m³ | 40 to 55 kg/m³ |
| Working Service Temp | -40℃ to 105℃ | -40℃ to 105℃ |
| Closed-Cell Rate | Over 98% | Over 98% |
| Resilience Metric | Compression resilience over 80% | Compression resilience over 80% |
| Fire Certification | Flame retardant, self-extinguishing off fire | Flame retardant, self-extinguishing off fire |
Custom-engineered thermal insulation systems configured for the unique needs of global industrial, chemical, and building applications.
Condensation control on commercial chilled water systems is a major challenge for building engineers. Standard ventilation system air ducts require insulation to maintain thermal retention while suppressing structural noise. Our Kingflex insulation reduces air conditioning losses and acts as a dampener, suppressing sound transmission in dense commercial properties.
Industrial cryogenic storage and delivery processes operating down to -40℃ need to prevent environmental moisture from freezing on pipe exteriors. The Dienes cryogenic foam series is designed to withstand severe thermal contraction without cracking, maintaining a reliable seal over years of operation.
Refineries and chemical plants handle highly corrosive substances under volatile temperatures. High-density NBR/PVC insulation protects these systems from weather, minimizes moisture entry, and guards metal substrates from corrosion under insulation (CUI).
Our production base is located in Dacheng, China—a major hub for green building materials. Kingflex operates 5 large automatic assembly lines with an annual capacity exceeding 600,000 cubic meters. This manufacturing capacity makes us a designated production supplier for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
By using automated vertical foaming chambers, precise electronic scale feeders, and computerized hot-air curing processes, we ensure that every batch of NBR/PVC elastomeric rubber matches the performance of the first batch. This high capacity protects wholesale buyers and major infrastructure developers against regional supply chain issues.
How we are improving our material performance to meet future environmental regulations and energy codes.
To reduce dependence on petroleum products, our lab is testing the addition of bio-based monomers into the NBR matrix. This maintains fire safety standards while reducing the overall carbon footprint of our insulation products.
We are adjusting our vulcanization accelerators and blowing agents to eliminate outgassing. This will make our insulation suitable for advanced semiconductor cleanrooms and pharmaceutical production lines.
Future systems will feature surface-integrated moisture sensors that communicate with building management systems, alerting teams to condensation issues before corrosion can occur.
When purchasing wholesale Nitrile Rubber Insulation, several factors influence final unit pricing. Our sales team helps buyers manage cost variables for large projects:
We work with international logistics providers to deliver to over 66 countries, ensuring clear customs paperwork and compliant labeling for major ports worldwide.
Kingflex Insulation Co., Ltd. was established by the Jinwei Group, which has more than 40 years of history. Jinwei Group, founded in 1979, was the first manufacturer of thermal insulation materials north of the Yangtze River. Decades of engineering knowledge support our production facilities today.
Our engineering team works closely with installation teams to design comprehensive systems. We offer technical support that includes thermodynamic calculations, product selection, installation training, and post-installation reviews. Kingflex employs 8 dedicated R&D engineers, 6 international sales specialists, and 230 production personnel at our main site.
Kingflex products are certified to match international engineering and safety standards, ensuring smooth project approvals.
Our products carry certifications including BS 476 (Class 0 and Class 1), CE, REACH, ROHS, UL94, and ASTM standards. Each manufacturing run is fully traceable, from the raw NBR/PVC polymers through the foaming process to the final boxed rolls. This traceability protects operators and satisfies risk management audits in critical installations like hospitals and cleanrooms.
Proof of field performance through site reviews, installation checks, and client project references.
Kingflex products are installed across global projects in Europe, the Americas, the Middle East, and Southeast Asia. Field performance reviews show that our closed-cell rubber retains its thickness and thermal properties over time, even in hot, humid climates. This durability reduces maintenance costs by preventing surface condensation and pipe corrosion.
By using Kingflex 520 Thermal Insulation Glue, installers achieve tight, secure joints that act as uniform vapor barriers, ensuring the long-term reliability of the system.
We work closely with engineering and procurement teams to ensure smooth communication and delivery.
Detailed answers to technical and procurement inquiries regarding our elastomeric rubber insulation systems.
It is primarily used for HVAC ducts, air conditioning piping, building insulation, industrial pipeline cold conservation, and acoustic noise reduction. Its closed-cell structure prevents condensation on cold surfaces, protecting pipes and ducts from corrosion.
Yes, our rubber foam products are fire retardant. They are engineered to comply with building and industrial safety regulations, achieving certifications such as BS 476 Class 0 and Class 1, and self-extinguishing upon fire source removal.
Rubber foam is a flexible, closed-cell, moisture-proof material ideal for HVAC, plumbing, and cryogenic systems. Rock wool is a high-temperature resistant, fibrous mineral wool best suited for high-heat steam pipes and thermal building insulation requiring strict non-combustible ratings.
Yes, we provide OEM services. We can customize thickness, inner diameter, color, surface claddings, and self-adhesive backings to match specific project requirements.
Our products have passed BS 476, CE, REACH, ROHS, UL94, and ASTM testing, ensuring compliance with global building codes and environmental regulations.
Yes, every manufacturing run is logged. We can trace raw material batches and manufacturing dates to ensure consistent quality and ease of compliance reporting.
We manufacture sheet rolls in thicknesses ranging from 6 mm to 50 mm, allowing engineers to choose the correct thermal resistance for their design requirements.
With correct installation and regular maintenance, our elastomeric products typically have an operational service life of 10 to 15 years, depending on environmental exposure.
Select from our wide range of premium closed-cell NBR/PVC products. Contact us for custom dimensions, pricing structures, and shipping schedules.
Kingflex
