Kingflex
Premium industrial elastomer products engineered to reduce high-vibration and airborne acoustics in generator structures.
A Comprehensive Technical Review of Global Acoustic Control Trends, Sound Absorbing Mat Requirements, and Regulatory Frameworks.
Global noise compliance frameworks (such as ISO 8528-10, EU Directive 2000/14/EC, and OSHA regulations) mandate that industrial and residential generator units operate below specific decibel thresholds. Closed-cell NBR/PVC mats deliver high-efficiency noise isolation to bypass these regulatory hurdles easily.
Generators generate intense ambient heat alongside severe vibrations. Kingflex sound absorbing mats dual-function as low-thermal-conductivity isolators (-40℃ to 105℃), preventing convective thermal transfer to the outer metal canopies while simultaneously absorbing mechanical noise waves.
Unlike open-cell PU foam which retains moisture and breaks down under oil mist, closed-cell NBR/PVC structures exhibit extreme moisture resistance (high water vapor diffusion resistance factor) and do not decay when exposed to chemical splash, diesel vapours, or ozone.
Modern EPC (Engineering, Procurement, and Construction) companies and generator OEMs face stringent requirements when designing power systems for data centers, medical campuses, and critical infrastructure. The selection of acoustic dampening materials must go beyond basic sound reduction. Procurement engineers require certified materials that guarantee fire resistance (e.g., BS 476 Class 0, UL94, ASTM standards), chemical stability against oils and fuels, and long operational lifetimes without degrading. China-based manufacturing hubs, particularly the Kingflex production facilities, have scaled to address these high-throughput requirements by supplying highly integrated, customizable NBR/PVC acoustic solutions directly to assembly lines worldwide.
Historically, the market relied on rock wool and open-cell polyurethane mats. However, modern generator canopies suffer from space restrictions, making bulky rock wool installations difficult. Furthermore, open-cell foams act like sponges, absorbing oil, diesel particulates, and water vapor, creating a severe fire hazard. Kingflex elastomeric closed-cell NBR/PVC matrices alleviate these risks entirely. The specialized cellular formulation traps air inside micro-chambers, providing superior acoustic insertion loss within minimal thickness envelopes (ranging from 6mm to 50mm) while ensuring absolute moisture and fire security.
A Leading Manufacturing & Trading Combo for Premium Thermal & Acoustic Systems
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex research development and production department is located in the well-known capital of green-building materials in Dacheng, China. It is an energy-saving environmental friendly enterprise concentrating on research, development, production, and sales. In operation, Kingflex takes energy saving and consumption reduction as the core concept.
We provide advanced solutions regarding acoustic and thermal insulation by means of consulting, research and development, custom production, installation guidance, and post-sale service to lead the development of the global building and industrial materials industry.
A Rich Heritage of Expertise: Established by the Jinwei Group, which possesses more than 40 years of industrial history. Kingway Group, established in 1979, was the first manufacturer of thermal insulation materials north of the Yangtze River, grounding Kingflex's technological roadmap in decades of verified expertise.
At present, Kingflex has 5 large automatic assembly lines, with an annual production capacity of more than 600,000 cubic meters. Over the decades, Kingflex has become a designated production enterprise designated by the Ministry of Energy, the Ministry of Electric Power and the Ministry of Chemical Industry in China.
Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first class service for our clients. Kingflex has 8 professional engineers in R & D Department, 6 professional international sales, and 230 workers in the production department.
Understanding NBR/PVC dimensions, density thresholds, and performance metrics for acoustic design engineers.
| Parameters | Standard Specification |
|---|---|
| Material Composition | Nitrile Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC) |
| Thickness Range | 6mm - 50mm |
| Core Density | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ |
| Closed-cell Rate | >98% |
| Thermal Conductivity (λ) | ≤0.034 W/(m·k) at 0℃ |
Acoustic Advantages: 1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation. 2. Full closed-cell structure, low moisture absorption, stable long-term thermal conductivity. 3. Compression resilience over 80%. 4. Flame retardant, self-extinguishing off fire. 5. Low thermal conductivity, high moisture resistance factor.
| Parameters | Standard Specification |
|---|---|
| Material Composition | NBR/PVC Elastomeric Matrix |
| Thickness Range | 9mm - 40mm |
| Inner Diameter (ID) | 6mm - 114mm |
| Core Density | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ |
| Manufacturing Standard | Professional pipe spraying extrusion |
Acoustic Advantages: 1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation. 2. Professional pipe spraying equipment ensures even coating. 3. Compression resilience over 80%. 4. Flame retardant, self-extinguishing off fire. 5. Low thermal conductivity, high moisture resistance factor. 6. Greatly reduce pipe freezing and cracking risks.




How Kingflex acoustic elastomeric insulation systems are designed to operate across diverse, high-stress commercial and industrial sectors.
Providing high-efficiency heat and sound insulation for complex air duct systems and piping. Eliminates condensation, blocks compressor resonance, and secures energy-saving cooling pathways in large-scale commercial real estate.
Excellent solution for interior and exterior walls, multi-layered roofs, and basement acoustic absorption. Significantly reduces environmental airborne noise and keeps standard indoor acoustics comfortable.
For high-intensity petrochemical plants, cryogenic facilities, gas transportation networks, and industrial steam units. Reduces thermal loss and prevents corrosion under insulation (CUI) through premium moisture-barrier ratings.
In healthcare facilities, emergency diesel generators must start instantly and run quietly without disrupting patients. Kingflex closed-cell generator mats line the inner shell of generator rooms and enclosures, absorbing structural vibrations and attenuating decibels directly at the source.
Designed to survive the severe structural shaking and humidity found in railway engines, cargo ships, and marine offshore rigs. Resistant to salt-spray and heavy oils while functioning as a continuous sound barrier.
Kingflex Insulation Co., Ltd. continuously invests in advanced testing, chemical material synthesis, and microcellular foam manufacturing innovation to sustain its leading technical roadmap.
Our dedicated team of eight professional R&D engineers designs custom formulations to improve fire ratings, physical durability, and acoustic frequency attenuation rates. Kingflex products have passed rigorous testing parameters worldwide to obtain global regulatory entry tickets.
Real feedback screenshots and field applications highlighting global projects and supplier trust.





Engine Enclosure Liners
Industrial Compressor Insulation
Heavy HVAC Duct Isolators
High-Density Pipe Jackets
Full list of standard production models from Kingflex thermal & soundproof facility.
A live look into our factory production yards and packaging lines.





























Expert answers regarding material parameters, certifications, customization options, and application instructions.
Procure direct-from-factory rubber foam insulation pipes and sheets for comprehensive project engineering.