Kingflex
Select industrial-grade rubber foam sheets, elastomeric tubing, and cryogenic-safe insulation products for high-compliance engineering designs.
Around the world, building regulations dictate stringent fire safety procedures. Governing bodies enforce tests like ASTM E814 (UL 1479) in the United States, EN 1366-3 in Europe, and BS 476 Part 20/22 in international territories. These codes monitor how systems handle extreme temperatures, structural load shifts, and high pressure during fires.
An unsealed or poorly sealed penetration acts as a chimney during a fire. Implementing high-performance elastomeric closed-cell rubber foam insulation along with intumescent sealants and firestop sleeves ensures the penetration maintains the same structural fire rating as the ceiling. Additionally, closed-cell materials provide crucial thermal isolation, preventing condensation and mold growth that compromise indoor air quality.
Kingflex Insulation Co., Ltd. is a leading professional manufacturing and trading combo for thermal insulation products. Our R&D and production departments are located in Dacheng, China—renowned as the capital of green building materials. As an energy-saving, environmentally friendly enterprise, we specialize in the research, development, production, and sale of advanced insulation materials.
Established by the Jinwei Group, which has a proud history of more than 40 years since its founding in 1979, Kingflex stands as the first manufacturer of thermal insulation materials north of the Yangtze River. We provide full-scope insulation solutions—from technical consultation, R&D, and manufacturing to installation guidance and post-sale service—helping lead the development of the global building materials industry.
Why advanced elastomeric formulations outperform mineral fibers in sealing structural penetrations.
Unlike mineral fibers, which absorb moisture, our NBR/PVC closed-cell structure has an even cell distribution with a closed-cell rate exceeding 98%. This blocks water vapor, preventing rust under insulation (CUI) and structural damage around ceiling penetrations.
Formulated with advanced halogen-free organic elements, our insulation material resists combustion and stops fire from spreading. If exposed to direct flames, the material chars and self-extinguishes, meeting BS 476, UL 94, and international ASTM flame spread standards.
Ceiling penetrations often experience noise transfer from HVAC duct vibrations and water pipes. Our flexible rubber matrix absorbs energy, decoupling mechanical systems from the ceiling structure to reduce flanking noise.
Our team is composed of dedicated experts united by a shared vision of providing first-class service to clients. Kingflex employs 8 professional engineers in our R&D Department, 6 professional international sales specialists, and 230 skilled production workers. Together, we manage our 5 high-speed automatic assembly lines to ensure stable quality, rapid lead times, and comprehensive quality checks.
Our automated extrusion, foaming, and curing ovens run on optimized thermodynamic curves. This ensures uniform density throughout the material, avoiding soft spots that can compromise thermal efficiency. By using real-time infrared thickness gauges and automated slitting machines, we keep dimensional tolerances within +/- 0.5mm, ensuring a precise fit for onsite installations.
When international contractors evaluate quotes for fire-rated ceiling penetrations, they look at the Total Cost of Ownership (TCO). Sourcing directly from China gives procurement managers access to our robust raw material network, automated production lines, and Dacheng's advanced transport systems.
These logistical and cost advantages allow us to offer competitive rates on container-load shipments without sacrificing compliance. We provide complete chemical test reports, traceable production runs, and secure export packing to ensure materials arrive undamaged and ready for installation.
Our production processes follow strict ISO 9001 quality guidelines. Each batch of elastomer insulation is fully traceable back to its raw material component feed, temperature log, and test sample. We are certified by respected third-party testing agencies globally, demonstrating compliance with fire safety standards in Europe, North America, the Middle East, and Asia-Pacific.
Transparent order updates, detailed technical support, and strict compliance documentation from inquiry to delivery.
At Kingflex, we keep communication simple and transparent. We provide real-time updates and clear answers on custom orders, technical parameters, and shipping milestones.
Our sales team works directly with engineers to make sure the insulation materials supplied match your project's acoustic, thermal, and fire safety specifications.
Verified technical parameters for our flagship NBR/PVC closed-cell elastomeric lines.
Used in central HVAC ductwork, building walls and roofs, commercial machine rooms, rail systems, cold storage facilities, and noise-sensitive piping systems.
Ideal for chilling/heating water pipes, domestic plumbing runs, process piping in industrial plants, marine insulation, solar water systems, and HVAC refrigeration lines.
Proving our capacity to deliver large-scale project materials to construction sites worldwide.
We manufacture a complete range of flexible elastomeric sheets, tubes, pre-formed piping insulation, and mineral wool barriers.
How to compile a complete Technical Request for Quote (RFQ) to minimize delays and optimize project costs.
Clearly specify the required fire rating (e.g., 1-hour, 2-hour, or 3-hour ratings) and the relevant test standards (such as BS 476, ASTM E814, EN 1366-3, or UL 1479) in your RFQ.
When ordering pre-formed elastomeric pipe insulation, provide exact outer diameters (OD) and thickness requirements (ranging from 9mm to 40mm) to ensure a snug fit that prevents condensation.
To achieve a secure, vapor-tight seal at joint lines, specify high-performance adhesives like Kingflex thermal insulation glue 520 in your bill of materials.
Need a custom quote, technical datasheet, or fire compliance certificate for your project? Contact our sales team today.
Request Technical Quote & Free SamplesAnswers to common technical questions about elastomeric insulation systems and fire safety compliance.
Select the remaining items in our portfolio to complete your mechanical room or plumbing insulation specs.
