Kingflex
Seoul High-Density Flexible Rubber Foam Sound Absorbing Sheets
Engineered for multi-family residential zoning acoustics in Seoul. Delivers exceptional mechanical vibration damping and ambient sound attenuation.
View Technical Specifications →Premium open-cell elastomeric rubber foams designed to meet Seoul’s stringent environmental noise regulations and structural safety standards.
Engineered for multi-family residential zoning acoustics in Seoul. Delivers exceptional mechanical vibration damping and ambient sound attenuation.
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Advanced cellular matrix optimization for target high-frequency HVAC air-duct noise mitigation. Optimized for high-density business districts like Gangnam.
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Hybrid polymer base material providing fire-retardant characteristics combined with excellent mechanical resilience. Perfect for server rooms and data centers.
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Miniaturized high-precision lines with closed-cell thermal envelope. Minimizes fluid friction noise while eliminating condensation in high-humidity seasons.
View Technical Specifications →Seoul has established itself as one of the world's most sophisticated smart cities, characterized by high-rise residential towers (Officetels), multi-level industrial complexes, and vast underground transit networks. However, high-density vertical living and working present significant structural challenges, specifically in the realms of airborne noise propagation, mechanical system vibration, and structural sound transmission.
Under the revised South Korea Green Building Standards (G-SEED) and localized Seoul Metropolitan Government bylaws, projects must meet strict requirements for energy efficiency (thermal control) and indoor sound insulation. Choosing high-performance acoustic materials is no longer optional—it is a critical compliance path. Our open-cell NBR/PVC elastomeric foam products are custom-engineered to deliver high Noise Reduction Coefficient (NRC) values, assisting developers in meeting domestic standard KS F 2805 and global ISO frameworks.
A detailed engineering breakdown of sound absorption, physical properties, and compliance profiles of Kingflex elastomeric materials.
| Material Classification | Cellular Configuration | NRC Range (500Hz - 2000Hz) | Density (kg/m³) | Thermal Conductivity (λ W/m·K) | Fire Classification Rating |
|---|---|---|---|---|---|
| NBR/PVC Sound Absorbing Sheet | Open-cell, uniform micro-porous structure | 0.75 - 0.85 | 40 - 55 | ≤ 0.035 at 0°C | BS 476 Class 0 / UL 94 V-0 |
| Engineered Elastomeric Nitrile Rubber | Symmetrical hybrid (Closed/Open-cell mix) | 0.60 - 0.70 | 45 - 55 | ≤ 0.034 at 0°C | KS F ISO 5660-1 / Euroclass B-s3-d0 |
| Cryogenic Foam Systems | High-density micro-closed cell | 0.30 - 0.40 (Acoustic Damping) | 60 - 80 | ≤ 0.031 at -160°C | ASTM E84 Class A / UL 94 V-0 |
| Rock Wool Thermal Blending | Fibrous mineral structure | 0.85 - 0.95 | 60 - 120 | ≤ 0.038 at 25°C | Non-combustible Class A1 |
Acoustic performance in elastomeric insulation relies on cell morphology. Open-cell foam structures feature interconnected passages. Sound waves enter these pores, causing friction between air molecules and the cell walls, converting sound energy into heat. Closed-cell configurations trap air in independent pockets, making them excellent barriers for thermal energy and vapor transfer, while open-cell formulations excel at sound absorption and indoor echo control.
Deploying tailored insulation materials across South Korea's high-tech manufacturing, commercial HVAC networks, and transport infrastructure.
Semiconductor fabs in Gyeonggi and the greater Seoul area require micro-vibration control. High mechanical noise from heavy process cooling loops is mitigated using our engineered open-cell NBRPVC panels. Low outgassing formulations prevent contamination in ISO Class 1 cleanrooms.
Large buildings in business districts like Yeouido use massive chilling and air distribution networks. Integrating Kingflex elastomeric sleeves inside ductwork reduces fan blade turbulence noise, while its closed-cell thermal performance prevents energy loss.
Cryogenic NBR systems are designed to operate from -40°C down to -200°C. Essential for cryogenic pipeline infrastructure supplying medical, biological, and technical gases across industrial hubs in Incheon and Seoul.
Kingflex Insulation Co., Ltd. is an industry-leading manufacturing and trading combo for thermal and acoustic insulation products. Our R&D and manufacturing operations are based in Dacheng, China—a hub for green-building material production. By utilizing 5 advanced automated assembly lines, we achieve an annual output exceeding 600,000 cubic meters.
Our Factory 4.0 integration guarantees process precision. Raw materials are mixed under computerized control, and temperature profiles are regulated throughout extrusion and foaming. This ensures a consistent cellular structure with a closed-cell rate exceeding 98% for thermal products, and highly uniform porosity for open-cell acoustic products.
Annual Production Capacity
Industry Manufacturing Heritage
Global Export Footprint
Dedicated R&D Engineers
Acoustic and thermal design parameters engineered to withstand demanding operational environments.
Excellent for HVAC duct liners, wall assemblies, acoustic ceiling systems, and mechanical cabinet enclosures.
Ideal for VRF air conditioning piping, chilled water loops, sanitary drainage silencing, and hot water systems.
Third-party verified products built for regional regulatory frameworks, ensuring safety and performance compliance.
Fire Safety: BS 476
Class 0 flame spread rating for commercial buildings.
European Standard: CE
Compliance with EN 14304 requirements for thermal insulation.
Quality: ISO 9001
Process control from raw elastomer prep to final foaming.
Environmental: RoHS
Heavy-metal and halogen-free formulations.
Proven acoustic dampening and thermal efficiency performance across prominent projects.
Mapo-gu Mixed-Use HVAC Damping
Engineered open-cell insulation inside HVAC air handlers to achieve <35 NC noise criteria.
Gangnam HQ VRF Piping Damping
Fitted NBR/PVC pipe sleeves over multi-zone refrigerant lines, eliminating wall transmission hum.
Incheon Data Center Chilled Water Lines
Dual-layer insulation preventing condensation on structural pipe hangers in high-humidity periods.
Gyeonggi Semiconductor Cleanroom Damping
Applied low-outgassing open-cell acoustic panels to exhaust fan discharge plenums.
Acoustic and insulation design questions answered by Kingflex technical specialists.
It is primarily used for central HVAC ducts, chilled and hot water pipes, high-rise building thermal insulation, structure-borne sound isolation, and industrial mechanical system noise reduction. Its closed-cell format handles condensation control, while open-cell formulations are designed for sound absorption.
Yes. Kingflex rubber foam insulation is fire retardant and meets international standards like BS 476 Class 0, UL 94 V-0, and is tested against KS F ISO 5660-1 standards. This ensures high flame resistance and low toxicity profiles required by Korean building safety codes.
Rubber foam is flexible, clean to install, and moisture-proof. Its viscoelastic matrix provides sound absorption along with structural vibration damping. Rock wool offers high thermal performance at extreme temperatures (above 150°C) and is fireproof, but can absorb moisture if unsealed and does not provide comparable low-frequency structure vibration isolation.
Yes, we provide full OEM and ODM services. We support custom density profiles, foil-faced laminations, self-adhesive backings, and specific dimensional requirements for industrial and construction projects.
Our manufacturing facilities are ISO 9001 and ISO 14001 certified. Product compliance certifications include CE, REACH, RoHS, UL94, and ASTM testing.
Yes. Every production run is coded with batch numbers, tracking raw materials, line parameters, and quality inspection records to ensure trace verification for critical projects.
We produce standard sheets and continuous rolls in thicknesses ranging from 6mm to 50mm, accommodating diverse project specifications.
When installed according to technical guidelines, Kingflex rubber foam insulation provides a service life of 10 to 15 years, maintaining stable thermal and acoustic performance over time.
Complete product range available for export to the Seoul Metropolitan Area, Incheon Port, and Gyeonggi industrial zones.
Flexible thermal tubing designed to reduce system energy losses and suppress flow-induced noise in chilled water loops.
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Tough aluminum foil reinforcement layer provides protective shielding against physical damage and vapor ingress in high-traffic plenums.
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Provides simultaneous thermal insulation and acoustic barrier performance, ideal for cleanrooms and medical centers.
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Colored finish designed to identify supply/return channels, facilitating pipeline identification during building maintenance.
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Specialized high-density matrix developed for cryogenic environments, keeping pipes flexible and dampening stress under thermal shock.
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Insulates pipeline networks transporting liquefied gases, protecting against thermal ingress and environmental icing.
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Engineered closed-cell system for sub-zero operations, preventing moisture-induced ice formation on cold pipelines.
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Maintains mechanical flexibility at low temperatures, absorbing pipe expansion and contraction cycles.
View Catalog →Get in touch with our technical sales division to receive detailed material data sheets, structural certifications, and custom wholesale pricing for the Seoul market.