Explore our advanced engineered thermal and acoustic insulation portfolios designed for building, cryogenic, and HVAC/R pipeline systems worldwide.
As the international construction, HVAC, cryogenic, and petrochemical industries transition to zero-carbon operational modes, the requirement for superior-performance elastomeric insulation materials escalates. High-performance closed-cell elastomeric rubber foam functions as a thermal shield. Its chemical composition limits moisture transmission, reducing thermal bridging and preventing condensation under challenging thermal differentials.
By engineering a precise molecular formulation combining Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC), we create an isotropic, micro-cellular structure. This layout incorporates over 98% closed-cell structures that entrap dry air, providing stable long-term thermal conductivity (λ ≤ 0.034 W/(m·K) at 0°C) and robust water vapor diffusion resistance (u ≥ 10,000).
Founded by the Jinwei Group, which holds a heritage of over 40 years, Kingflex Insulation Co., Ltd. has established itself as a premier manufacturing and trading destination for commercial thermal materials. Kingway Group, set up in 1979, was the pioneer manufacturer of thermal insulation materials north of the Yangtze River. The company integrates research, scientific formulation, and large-scale extrusion under its facility in Dacheng, China, the capital of green-building materials.
We approach global sustainability with an energy-saving development focus. Through consulting, R&D, structural design, installation guidance, and technical after-sales assistance, we help engineering projects meet code limits and structural parameters with minimal waste.
For international procurement managers, securing a reliable supply of insulation materials requires a partner with significant production capacity, high quality standards, and efficient raw material sourcing. Our facility in Dacheng serves this role by integrating domestic chemical resources and highly automated extrusion lines.
Equipped with 5 high-speed automated extrusion lines, we achieve an annual output exceeding 600,000 cubic meters. This volume allows us to supply large infrastructure projects without extending lead times.
Our research facility features 8 dedicated engineers developing solutions for low-temperature condensation and extreme acoustic dampening. We hold multiple patents in cellular insulation and fire-retardant chemistry.
Over the last 16 years, we have exported insulation products to more than 66 countries. Our logistics network handles customs clearance, documentation, and container optimization to reduce delivery costs.
Large engineering projects require compliance with strict fire safety, thermal performance, and health codes. Kingflex products are tested and verified to meet these regulatory standards.
Our Quality Management System tracks every batch of raw rubber from import to extrusion. This traceability ensures consistent properties for density, cell size, and flame resistance. In addition, our NBR/PVC foam is halogen-free and has low VOC output, helping builders meet LEED, BREEAM, and DGNB certifications.
We are a designated production partner for the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry in China, which supports our standing in high-specification industrial piping projects.
Kingflex insulation materials are tested to meet major global safety and performance standards. This testing simplifies the approval process for mechanical engineers and construction inspectors.
| Standard / Regulation | Test Parameters | Certified Performance Value |
|---|---|---|
| BS 476 Part 6 & 7 | Fire propagation index & Flame spread rating | Class 0 / Class 1 compliance |
| ASTM C534 | Material characteristics for preformed elastomeric insulation | Meets standard specifications for Grade 1 |
| EN 13501-1 | Combustion behavior of building elements | B-s3, d0 self-extinguishing class rating |
| RoHS / REACH Directive | Presence of heavy metals & SVHC compounds | Compliant (0% toxic additives detected) |
| ASTM E84 | Surface burning properties of building products | Flame Spread Index < 25; Smoke Developed Index < 50 |
Elastomeric rubber foam is used across a variety of demanding thermal and acoustic environments.
Installed on chilled water lines and air ducts to prevent external condensation and reduce thermal transmission in high-humidity commercial buildings.
Designed for low-temperature applications down to -200°C. These materials maintain elasticity and prevent moisture ingress, which can lead to pipe rupture.
Maintains process temperatures in chemical refineries, reduction facilities, and manufacturing plants, helping lower fuel consumption and emissions.
Used in hotel, school, and medical center mechanical rooms to damp equipment vibration and absorb structural noise.
Provides lightweight insulation for train cabins, subways, and ship hulls while meeting strict flame, smoke, and toxicity requirements.
Protects plumbing and solar hot water systems from freezing and heat loss in cold climates.
Review the dimensional and physical performance specifications of our standard product range.
Our elastomeric sheets are designed for large surfaces like HVAC ducts, tanks, and wide industrial piping. Their high elasticity simplifies cutting and installation around irregular components.
Designed for quick installation on standard copper and steel pipes. These pre-slit tubes slip over lines to form a tight thermal seal that limits heat loss and helps prevent condensation-induced corrosion.
We manufacture custom insulation components for specialized temperature regimes and mechanical conditions.
We work directly with engineering clients to address specific structural tolerances, customs requirements, and logistics needs.
Browse detailed technical answers regarding elastomeric rubber foam insulation performance, installation, and compliance.
Browse our complete list of thermal and acoustic insulation products. Select a product to view technical specifications and request a quotation.
Kingflex