Advanced elastomeric rubber foam sheets engineered to satisfy strict EU energy codes and architectural specifications in Bulgaria.
High-density closed-cell structure providing unparalleled thermal efficiency and vapor barriers for major Bulgarian construction developments.
View Specifications →
Designed for optimized acoustics and thermal performance, supporting modern ventilation systems in Sofia business centers.
View Specifications →
Extreme low-temperature performance for petrochemical systems, processing units, and cold chain terminals in Burgas port.
View Specifications →
Excellent noise-dampening index designed for theaters, office complexes, and public infrastructure spaces across Plovdiv.
View Specifications →Bulgaria is currently undergoing a structural transformation of its heating, ventilation, and industrial plant infrastructure. Driven by the EU Green Deal and the stringent mandates of the Energy Performance of Buildings Directive (EPBD), contractors and developers from Plovdiv's manufacturing clusters to Varna's marine facilities require insulation that achieves high performance while maintaining durability.
Our premium-grade rubber foam sheets and tubes are specifically engineered to combat high relative humidity, thermal bridges, and acoustic transmission. By implementing a high closed-cell concentration (>98%), these NBR/PVC sheets minimize energy loss in district heating pipelines, HVAC ductworks, and heavy chemical refineries, ensuring compliance with local construction laws and European harmonized standards.
Get Project Layout & Consultation
Kingflex Insulation Co., Ltd. stands as a professional manufacturing and trading combo, supplying global industries with high-performance thermal insulation products. Our R&D and production headquarters are located in China's green-building material hub, Dacheng. The business is built on a foundation of energy conservation, and offers consultation, R&D, precision manufacturing, and installation guidance.
Originating from the Jinwei Group, which holds over 40 years of manufacturing history since its foundation in 1979 as a thermal insulation pioneer north of the Yangtze River, Kingflex has built modern capacities. Today, we operate 5 large-scale automated assembly lines producing over 600,000 cubic meters annually, catering to building, industrial, and aerospace clients across more than 66 countries.
Our dedicated R&D division contains 8 senior engineers, 6 international sales agents, and 230 technicians working in synergy to provide reliable systems for insulation, cooling, and acoustic damping.
Request Direct Factory RatesEngineered for high resistance to environmental factors, mechanical stresses, and temperature fluctuations.
Maintains stable thermal conductivity of λ ≤ 0.034 W/m·K at 0℃, significantly lowering system energy loss and reducing operating costs over long lifecycles.
A high water vapor diffusion resistance factor (μ ≥ 10,000) prevents interstitial condensation, eliminating insulation decay and protecting pipes from corrosion.
Features a compression resilience exceeding 80%, allowing the material to withstand physical compression, impact, and bending during complex installations.
| Property Parameter | NBR/PVC Elastomeric Foam Sheet Specification | NBR/PVC Elastomeric Foam Pipe Specification |
|---|---|---|
| Thickness Availability | 6mm to 50mm | 9mm to 40mm |
| Inside Diameter (ID) Range | N/A (Flat sheet / rolls) | 6mm to 114mm |
| Material Formulation | Premium Nitrile Rubber blended with Polyvinyl Chloride (NBR/PVC) | Premium Nitrile Rubber blended with Polyvinyl Chloride (NBR/PVC) |
| Nominal Density | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Operating Temperature | -40℃ to 105℃ | -40℃ to 105℃ |
| Reaction to Fire | Flame retardant, self-extinguishing, class 0/1 (BS 476) | Flame retardant, self-extinguishing, class 0/1 (BS 476) |
| Key Features | Excellent thermal & sound insulation, low moisture absorption | Precision coating, greatly reduces pipe freezing/cracking risks |
Addressing the specific operational demands of urban structures, process engineering, and maritime logistics.
Provides thermal barrier and condensation protection for central air ducts, VRV systems, and chilled water loops in commercial office towers across Sofia.
Engineered to withstand the chemical environments of manufacturing plants in Plovdiv and refineries in Burgas, protecting piping systems from harsh conditions.
Maintains structural elasticity at extreme low temperatures, supporting liquid gas piping, cold storages, and port terminals.
Designed for large surface applications like ductwork, air handling units, tanks, and structural panels. The NBR/PVC matrix offers high flexibility and tensile strength, making wrapping around complex shapes easy.
Thickness: 6mm - 50mm | Density: 40 - 55 kg/m³ | Temperature Limit: -40℃ to 105℃
Uniform cell expansion with a closed-cell rate exceeding 98%. Low long-term thermal conductivity and high moisture resistance prevent thermal degradation.
HVAC duct wraps, wall acoustics, industrial steam tank coverings, marine hulls, and rail transit acoustic barriers.
Pre-formed elastomeric cylinders engineered for fast installation on metal and plastic pipelines. The inner bore slides easily over pipes, while the exterior provides mechanical and environmental protection.
Thickness: 9mm - 40mm | ID: 6mm - 114mm | Density: 40 - 55 kg/m³ | Temperature Limit: -40℃ to 105℃
Precision extrusion ensures consistent wall thickness. Strong resistance to freeze-thaw cycles reduces the risk of copper and steel pipe freezing or cracking.
Air conditioning split pipes, chilled and hot water pipes, solar hot water lines, and industrial chemical process lines.
Our dedication to delivering high-performance elastomeric insulation is reflected in continuous feedback from our international partner network. From engineering calculations to shipment delivery, we maintain a transparent, quality-first process.
Whether verifying delivery schedules, custom thickness tolerances, or fire test reports, our sales and engineering support teams provide fast updates and comprehensive technical submittals.
Discuss Product Customization Options
Find answers to common technical, design, and regulatory questions about elastomeric foam systems.
Explore our full range of elastomeric foams, glass wool boards, and acoustic insulation products designed for industrial and commercial use.
Flexible closed-cell elastomer pipe designed to reduce energy loss in municipal district heating and HVAC networks.
View Details →
Features an adhesive backing layer to speed up installation on metal ducts and air handling unit housings.
View Details →
High-density insulation roll designed to prevent thermal transfer and condensation on industrial water systems.
View Details →
Slim, lightweight open-cell acoustic insulation designed for office partition walls and high-noise equipment rooms.
View Details →
Highly flexible pre-slit tubing designed to provide condensation protection on refrigeration pipelines.
View Details →
High-temperature fireproof board designed for commercial building walls and dry-wall acoustic partitions.
View Details →
Standard NBR/PVC extruded tube providing clean thermal and mechanical protection on copper and steel pipes.
View Details →
Advanced elastomeric cryogenic insulation designed for LNG pipelines, petrochemical systems, and cold stores.
View Details →
Kingflex