Kingflex
Explore our leading elastomeric rubber foam sheets, insulation pipes, adhesive solutions, and high-temp rock wool materials. Factory direct wholesale pricing with global compliance.
Understanding the macroeconomic forces, regulatory standards, and engineering specifications driving demand for elastomeric fire-rated materials.
Within the global HVAC, mechanical services, and industrial processing landscapes, fire safety is no longer merely a checklist item; it is a critical regulatory pillar. In the United Kingdom, structural changes to the Building Regulations (such as Approved Document B) and heightened insurance standards demand insulation materials with verified fire propagation characteristics. Procurement professionals are actively transitioning to high-density, closed-cell NBR/PVC matrices equipped with integrated fire-retardant tapes to seal seams and joints, preventing thermal bridging and toxic smoke spread.
For B2B buyers seeking wholesale suppliers, key parameters such as BS 476 Part 6 & 7 compliance (Class 0 and Class 1 ratings), smoke emission toxicity, and aging thermal conductivity coefficients dictate engineering choices. Secure jointing systems using specialized industrial fireproof tapes ensure that insulation sheets do not separate during sudden thermal expansion, maintaining the system's thermal integrity and safety profiles under extreme flame conditions.
How Kingflex materials resolve complex temperature, acoustic, and safety challenges across diverse industrial landscapes.
Prevents surface condensation on cold water lines and ductwork. High moisture resistance prevents mold growth in commercial spaces like hotels, hospitals, and shopping centers, while maintaining BS 476 Class 0 fire spread ratings.
For extreme temperature control down to -40°C. Kingflex flexible insulation prevents cracking under freeze-thaw cycles, maintaining elasticity and structural integrity in cold chain storage facilities and low-temperature process piping.
Our flexible closed-cell rubber foam functions as an effective noise reduction barrier, absorbing vibration and structural sounds in high-traffic mechanical plant rooms and industrial air ducts.
| Performance Property | Kingflex Elastomeric NBR/PVC Foam | Traditional Rock Wool Blanket | Industrial Fireproof Tape Sealant |
|---|---|---|---|
| Thermal Conductivity (λ) | ≤ 0.034 W/(m·K) at 0°C | ≤ 0.040 W/(m·K) at 25°C | N/A (Joint Barrier Only) |
| Moisture Resistance (μ) | ≥ 10,000 (Closed-cell prevents ingress) | Low (μ ≈ 1, requires vapor jacket) | Hydrophobic adhesive backer |
| Fire Safety Rating | BS 476 Class 0, UL94 V-0 | Non-combustible (Class A1) | Flame-retardant self-extinguishing |
| Physical Flexibility | Highly elastic, limits installation time | Rigid/Semi-rigid, prone to shedding fibers | Conformable to sharp angles & tees |
Kingflex Insulation Co., Ltd. is a leading professional manufacturing and trading group specialized in thermal and acoustic insulation products. Established by the Jinwei Group, which holds a rich heritage of over 40 years since its founding in 1979, Kingflex has grown from the pioneer manufacturer of thermal insulation materials north of the Yangtze River to a globally recognized brand exporting to over 66 countries.
Our manufacturing and R&D facility is situated in Dacheng, China—a well-known industrial hub for green building materials. As an energy-saving, environmentally friendly enterprise, we specialize in high-quality research, development, production, sales, and installation support.
Our production facilities feature 5 large automatic assembly lines, delivering an annual production capacity exceeding 600,000 cubic meters. Kingflex is designated as an approved manufacturer by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Factory specifications for our primary NBR/PVC Elastomeric Foam insulation profiles.
Material: NBR/PVC Blend
Thickness Options: 6mm - 50mm
Density Range: 40 - 55 kg/m³
Service Temperature: -40℃ to 105℃
Material: NBR/PVC Blend
Thickness Options: 9mm - 40mm
Inner Diameter (ID): 6mm - 114mm
Density Range: 40 - 55 kg/m³
Service Temperature: -40℃ to 105℃
Investing in green formulations, advanced fire barriers, and sustainable raw material alternatives.
Kingflex is developing advanced eco-insulation rolls free from halogenated flame retardants, minimizing toxicity and acid gas release during fire scenarios, meeting the strictest EU standards.
We are researching aluminum foil laminates integrated with sensor pathways to monitor insulation performance and detect moisture infiltration before structural damage occurs.
Our goal is to replace petroleum-derived plasticizers with renewable bio-components, reducing our carbon footprint while maintaining flexibility and flame-retardant properties.
Our dedicated R&D department features testing systems to evaluate flame spread indexes, smoke density ratings, and environmental resistance under simulated aging conditions.
Tested and verified by international authorities to meet construction, safety, and health guidelines.
Our insulation materials undergo regular testing to meet strict safety and quality standards across Europe, the UK, Asia-Pacific, and the Americas.
Ensuring product traceabilty, engineering support, and reliable logistics for global builders and industrial distributors.
We work closely with project engineers, quantity surveyors, and procurement managers to ensure custom thicknesses, densities, and adhesive backings are delivered on schedule.
Kingflex materials are used in projects worldwide, from municipal district heating systems to pharmaceutical cold storage units and high-rise commercial structures.












Common technical questions for mechanical engineers, HVAC contractors, and wholesale procurement managers.

















Select options below to download datasheet configurations, verify regional pricing, or contact our sales division.
A closer look at specialty configurations, cryogenic foam variants, and rock wool options.