Discover professional-grade rubber foam insulation sheets, rolls, and pre-formed tubes engineered for optimal thermal efficiency.
In modern construction, cooling infrastructure, and industrial fluid transmission, controlling energy transfer is paramount. Elastomeric rubber foam insulation rolls represent a peak achievement in material sciences, resolving the dual challenges of thermal conduction and moisture intrusion in a single, resilient form.
Engineered using a high-density, synthetically stable NBR (Nitrile Butadiene Rubber) and PVC (Polyvinyl Chloride) matrix, our products maintain a uniform distribution of closed micro-cells (exceeding 98% structure containment). This dense microcellular formation traps dry air molecules, effectively neutralizing convective heat paths and reducing the structural thermal conductivity ($\lambda$) to $\le 0.034$ W/(m·k) at 0°C.
Unlike fibrous insulators that rely on external vapor barriers, closed-cell elastomeric foam acts as an inherent, complete barrier to moisture. Water molecules cannot migrate through the matrix. The high water vapor diffusion resistance factor ($\mu \ge 10,000$) ensures that even under severe temperature gradients (such as chilled water lines in tropical humidity), condensation and sub-insulation corrosion (CUI) are entirely avoided.
Standard parameters and physics compliance thresholds for NBR/PVC elastomeric sheets and pipes.
| Performance Characteristic | Reference Value (NBR/PVC Standard) | Test Criteria & Compliance Standards |
|---|---|---|
| Thermal Conductivity (0°C) | ≤ 0.034 W/(m·K) | ASTM C518 / ISO 8301 |
| Thermal Conductivity (40°C) | ≤ 0.038 W/(m·K) | ASTM C518 / EN 12667 |
| Water Vapor Permeability Resistance ($\mu$) | ≥ 10,000 | EN 12086 / BS EN 13469 |
| Apparent Density Range | 40 kg/m³ to 55 kg/m³ | ASTM D1622 / EN 1602 |
| Flame Spread Index (FSI) & Smoke Developed | Class 1 / Class A rating (FSI ≤ 25, SDI ≤ 50) | ASTM E84 / UL 94 V-0 / BS 476 Part 6 & 7 |
| Service Temperature Limit | -40°C to +105°C (Custom configurations down to -200°C) | ASTM C411 |
| Dimensional Recovery (80% compression) | ≥ 80% resilience | ASTM D1056 |
How NBR/PVC elastomeric thermal barrier solutions perform across critical infrastructure nodes.
In hot, humid climates like Southeast Asia and the GCC, air conditioning units suffer severe condensation challenges. Our closed-cell rubber sheet rolls wrapped with reflective foil prevent moisture buildup on cold ducts, protecting drop-ceilings from damage and eliminating mold vectors.
Handling cryogenic liquids requires specialized insulation. Our custom cryogenic elastomeric materials resist micro-fractures down to -200°C. Multi-layered rubber configurations reduce thermal contraction stresses, keeping piping networks structurally sound.
Machinery rooms, HVAC ducts, and transit carriages generate substantial structure-borne noise. Using open-cell 6mm acoustic insulation alongside closed-cell barriers forms an effective sound shield, dampening high-frequency vibrations in urban properties.
Kingflex Insulation Co., Ltd. operates in Dacheng, China—a hub for green building materials. This regional concentration lets us maintain robust supply networks, drawing on nearby raw material supplies and advanced downstream processing partners.
Our vertical manufacturing setup handles everything from rubber polymerization to hot-extrusion foaming on 5 automated lines. This process delivers an annual production capacity of over 600,000 cubic meters. By integrating compounding and curing in-house, we reduce price volatility and guarantee consistent quality across bulk orders.
This streamlined production model allows us to ship to over 66 countries. We ensure timely delivery of custom sheet thicknesses (6mm to 50mm) and custom pre-laminated aluminum foils, meeting strict local regulations in different international markets.
Kingflex was founded by the Jinwei Group, which has been manufacturing insulation materials since 1979. With over 40 years of experience, we've developed deep technical expertise in polymer foaming.
Our R&D team includes 8 professional thermal engineers who specialize in fire chemistry, polymer aging, and sound insulation. This team works alongside 6 international sales consultants and 230 factory workers to deliver reliable products and helpful project support.
| Department | Key Team Roles |
|---|---|
| R&D / Material Science | 8 Specialist Engineers (Formulation, Fire Chemistry, Structural Testing) |
| International Advisory | 6 Technical Sales Consultants (Custom compliance, Shipping logistics) |
| Operations / Plant | 230 Technicians & Factory Staff (Production, QC checks, Custom finishing) |
Every product undergoes extensive testing to verify its insulation properties and long-term durability.
Our thermal insulation systems hold certifications from leading international testing bodies.
Our materials comply with BS 476 (Parts 6 & 7) for Class 0 rating, CE marking, REACH, RoHS, UL94 V-0, and ASTM E84 (Class A/Class 1 rating). This compliance ensures safety and reliability across municipal and industrial projects.
The insulation industry is changing rapidly, driven by stricter carbon emission rules and green building standards. To meet these demands, Kingflex R&D is focusing on three key technology upgrades:
These updates help developers achieve green certifications (like LEED, BREEAM, and DGNB) without losing thermal performance or durability.
Providing clear communication and verified product quality for engineers and sourcing managers.
International projects require transparent communication. We provide clear, verifiable updates at every stage—from custom compound scheduling and container packing to lab tests and shipping logs.
Kingflex elastomeric insulation systems in action across industrial sites and commercial HVAC systems.
Our flagship NBR/PVC elastomeric sheet roll provides reliable thermal protection and prevents condensation in complex HVAC installations.
Central HVAC air ducts, building wall and roof thermal barriers, chemical storage tanks, heavy-duty hot water pipe networks, marine hull acoustic isolation, and sub-zero process plants.
Pre-formed elastomeric tubing makes pipe installation faster and reduces thermal bridging at joints.
Protects piping systems from freezing and cracking, reduces heat loss in hot water lines, prevents mold growth in damp crawlspaces, and saves time during installation.
Visual documentation of our manufacturing, packing, and dispatch processes at the Dacheng plant.
Common technical questions about elastomeric foam insulation for engineering projects.
Our facilities are equipped to handle large-scale global shipments with protective packaging.
Explore additional insulation products, including foil-faced rolls and specialized cryogenic options.
Pre-formed thermal tubes and high-durability mineral wool blankets designed for demanding piping applications.
Need custom dimensions, foil finishes, or certification documents for your next project?
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