In modern commercial contracting, building engineering, and industrial acoustics, sourcing the correct elastomeric material is paramount. Ensolite foam represents a high-density, closed-cell NBR/PVC blend known for its exceptional resistance to thermal transmission, moisture infiltration, and mechanical wear. As a premier alternative and production standard, Kingflex designs and manufactures continuous-extrusion NBR/PVC rubber foam systems that deliver equivalent or superior technical performance to traditional Ensolite grades.
Closed-cell elastomeric foams are chemically engineered to possess a molecular structure comprising millions of independent micro-cells. This configuration traps gases with low thermal conductivity, drastically reducing heat transfer. Unlike open-cell foam structures which absorb moisture like sponges, the closed-cell nature of NBR/PVC formulations provides a built-in vapor barrier. This eliminates the risk of moisture migration, structural degradation, and corrosion under insulation (CUI), making it the material of choice for HVAC piping, cryogenic equipment, and severe weather marine sealing.
When evaluating wholesale suppliers, engineers analyze specific parameters including thermal conductivity (k-value), water vapor permeability, fire reaction indices, and operating temperature thresholds. Kingflex NBR/PVC sheets and pipes consistently meet global standards:
| Physical Property | Test Standard | Typical Value (Kingflex NBR/PVC) |
|---|---|---|
| Density Range | ASTM D1622 | 40 - 55 kg/m³ |
| Thermal Conductivity (at 0°C) | ASTM C518 | ≤ 0.034 W/(m·k) |
| Water Vapor Permeability (μ) | BS EN 12086 | ≥ 10,000 (Vapor Barrier Built-in) |
| Flame & Smoke Ratings | BS 476 Part 7 / UL 94 | Class 1 / V-0 Rated Self-extinguishing |
| Service Temperature Limit | ASTM C411 | -40°C to +105°C |
Kingflex Insulation Co., Ltd.'s state-of-the-art manufacturing plant is strategically located in Dacheng, China, universally recognized as the capital of green building materials. Operating in this localized cluster provides immense supply chain advantages that we pass directly to our global wholesale partners:
Raw Material Synergy: By operating at the center of the chemical polymer trade corridor, we procure high-grade nitrile butadiene rubber (NBR) and polyvinyl chloride (PVC) polymers with minimal transit delays. This proximity ensures consistent material quality and insulates our pricing structures from unexpected raw material spikes.
High-Throughput Production Capacity: At present, our facilities house 5 advanced, large-scale automatic assembly lines. With an annual production volume exceeding 600,000 cubic meters, we are designated as a priority manufacturing hub by multiple industrial authorities. This ensures that large enterprise orders are manufactured, processed, and packaged with exceptionally short lead times.
Direct routes to key shipping hubs, including Tianjin Port, facilitate swift customs clearance and reduced global freight costs for container-load shipments.
Every roll, pipe, and batch is logged. In compliance with strict ISO protocols, our products feature full traceability from raw polymer compounding to delivery.
Continuous inline optical scanning detects surface and cell uniformity, rejecting irregularities instantly to guarantee a uniform >98% closed-cell rating.
Industrial procurement managers do not buy foam based solely on price; they purchase based on project compliance and risk mitigation. For projects specifying Ensolite materials, our engineering division offers dynamic cross-referencing to ensure the selected Kingflex NBR/PVC compound fulfills localized building regulations.
Entering strict international markets requires absolute transparency. Kingflex products undergo third-party auditing to achieve industry standard compliance certifications:
Our formulations hold CE Markings, ensuring compliance across the European Economic Area. For environmental and chemical safety, all shipments conform to REACH and RoHS regulations, guaranteeing the exclusion of hazardous compounds, polybrominated biphenyls (PBB), and ozone-depleting substances.
For fire protection safety, our materials are certified to BS 476 (Part 6 & 7 Class 0/Class 1), UL 94 (V-0 rating), ASTM C534, and ASTM E84 (Class A 25/50 flame/smoke indices).
Every infrastructure project presents unique dimensional challenges. As a wholesale manufacturer, we provide custom sheeting thicknesses ranging from 6mm to 50mm and custom inner diameters (ID) for pipes from 6mm to 114mm.
We also support specific density tuning (40kg/m³ to 55kg/m³), color-coded outer jackets for chilled/hot water pipe identification, and secondary modifications such as aluminum foil laminations for UV/weather resistance, and structural self-adhesive backings for fast installation.
Elastomeric foam applications have moved beyond simple domestic air conditioners. Today's high-tech industries mandate precise environmental control systems where closed-cell materials are vital:
Prevents condensation on high-capacity chilled water lines and eliminates radiant energy loss in complex ventilation ducts within commercial malls, modern hospitals, and airport terminals.
Under ultra-low temperature operating conditions, insulation materials must maintain elasticity without cracking. Our cryogenic formulations prevent ice-formation down to -40°C.
Utilized as sound barriers inside industrial machinery enclosures, server rooms, and compressor boxes. The elastomeric matrix absorbs vibrational kinetic energy, transforming sound waves to heat.
Decarbonization Mandates: Global energy codes are tightening. As developers aim for Net-Zero and LEED certifications, high-density insulation materials with stable, long-term k-values are preferred over fiberglass to reduce systemic energy loss.
Cleanroom-Grade Air Quality: Fiberglass shedding is a major health hazard in sensitive cleanroom environments. NBR/PVC closed-cell foam is fiber-free, dust-free, and resistant to mold growth, ensuring exceptional indoor air quality in pharmaceutical facilities and microchip fabrication plants.
Rise of High-Efficiency Cold Chain Logistics: Cold storage pipelines demand heavy-duty insulation to protect system integrity. High moisture-barrier parameters (high water-vapor resistance factor) prevent sub-insulation condensation, keeping cold chains optimized.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Our research, development, and production department is situated in the green-building materials hub of Dacheng, China. As an energy-saving and environmentally friendly enterprise, we specialize in the complete lifecycle of thermal system optimization, covering research, advanced manufacturing, global sales, installation guidance, and dedicated post-sale support.
Established by the Jinwei Group (which brings more than 40 years of market history, dating back to its founding in 1979), Kingflex was built on a foundation of industry expertise. Jinwei Group was the first manufacturer of thermal insulation materials north of the Yangtze River. Today, Kingflex carries that legacy forward with continuous technological innovations in polymer compounding.
Our dedicated team is what makes Kingflex a leading supplier. We support our global partners through a collaborative team structure: 8 professional engineers in our R&D Department, 6 experienced international sales consultants, and 230 technicians and manufacturing staff operating our production lines.
Kingflex insulation materials are used worldwide across complex construction projects, oil and gas terminals, petrochemical refineries, defense sectors, and aerospace installations. Over the past 16 years, our products have been exported to 66 foreign countries.
Our international sales and support team values client communication. These real conversation records highlight our responsiveness, technical compliance support, and commitment to delivery timelines:
Designed for large-area mechanical equipment, cleanroom duct systems, and commercial wall lining. Our high-density continuous rolls offer excellent sound absorption and thermal protection.
| Material Base | Premium NBR/PVC blend |
| Available Thicknesses | 6mm, 9mm, 13mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Structural Density | 40 - 55 kg/m³ |
| Working Temperatures | -40℃ to 105℃ |
| Closed-Cell Ratio | >98% |
An extrusion-molded tubular sleeve designed for rapid installation on HVAC pipes and copper lines. Greatly reduces condensation, dripping, and energy loss.
| Inner Diameter (ID) | 6mm - 114mm |
| Sleeve Wall Thickness | 9mm, 13mm, 19mm, 25mm, 32mm, 40mm |
| Vapor Resistance | μ > 10,000 |
| Anti-Freezing Performance | Reduces pipe cracking down to -40℃ |
| Core Advantage | Even cellular structure with high compression resilience |
Quality control starts with precision processing. Our automated Dacheng facility controls the temperature, foaming agent concentration, and extrusion pressure to ensure every sheet and pipe meets international insulation specifications.
Explore our comprehensive product inventory below, designed to cover all thermal, cryogenic, acoustic, and high-temperature insulation requirements.
High thermal efficiency and easy slip-on installation for HVAC copper pipes.
Specially formulated to prevent CUI (Corrosion Under Insulation) on steel pipelines.
Highly flexible structure allowing tight bends without physical splitting.
Standard UV-resistant insulation jacket for outdoor plumbing lines.
Highly cellular, lightweight construction optimized for consumer appliances.
Commercial grade tube with high water-vapor transmission resistance.
A complete system engineered for utility, municipal water, and district heating plants.
Prevents cracking and physical stress under sub-zero LNG processing cycles.
Dual-temperature performance that maintains cell integrity across thermal cycles.
High vapor-barrier capability specifically designed for industrial gas plants.
High-temperature resistance for fireproofing walls and structural applications.
Flexible mineral wool wrap optimized for high-temperature ducts and ovens.
Here are detailed technical responses regarding our products, manufacturing standards, and custom solutions.
It is primarily used for commercial HVAC ductwork, air conditioning piping systems, building wall/roof insulation, industrial pipeline cold insulation, and sound-dampening applications. Its closed-cell structure blocks both thermal flow and water vapor migration, preventing energy loss and structural CUI (corrosion under insulation).
Yes, our formulations are fire retardant and self-extinguishing. They meet key safety standards including BS 476 (Part 6 & 7 Class 0/Class 1), UL 94 (V-0 rating), and ASTM E84, ensuring safety compliance across commercial, public, and industrial projects.
Rubber Foam (NBR/PVC): Flexible, closed-cell, dust-free, and moisture-proof. It acts as an integrated vapor barrier, making it ideal for HVAC, chilled lines, cleanrooms, and moderate temperature systems (-40°C to +105°C).
Rock Wool: Fibrous, open-pore, and highly heat-resistant. It is designed for high-temperature processing pipelines, furnaces, and firewalls but requires an external weather/vapor jacket in humid conditions.
Yes, we support comprehensive OEM and ODM solutions. We customize outer dimensions, inner diameters, thickness profiles, structural density, color coding, and offer secondary lamination options such as aluminum foil cladding or self-adhesive backings to meet project requirements.
Our products are certified by independent testing authorities to meet BS 476, CE, REACH, RoHS, UL 94, and ASTM standards. This ensures they meet chemical, mechanical, environmental, and fire safety requirements for global distribution.
Yes. In compliance with our ISO 9001 quality management system, every batch of raw material is logged, and production runs are coded to ensure complete traceability from initial polymer compounding to delivery.
Our continuous extrusion and calendering machinery produces thicknesses ranging from 6mm to 50mm in roll or sheet formats, allowing us to support projects from light commercial HVAC to heavy-duty industrial pipe jacketing.
Under typical indoor operating conditions, our high-density NBR/PVC systems have an operational life of 10 to 15 years. For outdoor installations, adding an aluminum-clad shield or protective coating protects the foam from UV degradation, ensuring long-term thermal efficiency.
As a trusted exporter, we supply global projects through reliable logistics channels. Here are the quality marks and international logistics networks supporting our supply chain:
Kingflex
