Kingflex
Explore our high-performance closed-cell elastomeric rubber foam insulation sheets, rolls, and tubes designed for building mechanical systems.
In contemporary building acoustics, the drainage system stands out as a critical source of structure-borne and airborne noise pollution. Fluid movement, waste travel, and pressure variances inside plumbing networks generate vibrations that readily transmit through walls and structural frameworks, degrading building occupant comfort. Acoustic performance is no longer a luxury feature—it is a core compliance metric under global architectural codes.
Kingflex Insulation Co., Ltd. addresses this challenge directly with advanced NBR/PVC elastomeric rubber foam insulation systems. Designed originally for high-efficiency thermal performance, our closed-cell viscoelastic polymer matrix exhibits exceptional sound damping (vibro-acoustic attenuation) properties. By isolating plumbing pipelines from the structural envelope, Kingflex products prevent the mechanical coupling that turns pipes into structural speakers, reducing overall installation noise by up to 30 dB.
Our premium closed-cell NBR/PVC structures with a density range of 40-55kg/m³ actively convert vibrational kinetic energy into heat energy, achieving superior damping class ratings across critical acoustic frequency bands.
Our centralized processing base in Dacheng, China, leverages fully automated production systems to process premium elastomeric compounds.
For decades, Kingflex has driven innovation in green-building materials, setting standards in thermal, cold, and acoustic insulation solutions globally.
Kingflex is established by the Jinwei Group, which possesses more than 40 years of history in industrial material manufacturing. Founded in 1979, the group pioneered the production of thermal insulation materials north of the Yangtze River.
Today, Kingflex Insulation Co., Ltd. stands as a specialized manufacturing and trading combo. Located in the recognized green-building material hub of Dacheng, China, we operate as an energy-saving and environmentally friendly enterprise. Our core design ethos focuses on energy preservation, consumption reduction, and acoustic optimization across global building frameworks.
We do not simply manufacture materials; we deliver comprehensive, consult-to-build solution engineering—covering initial consultation, material selection, installation guidelines, and dedicated post-sales quality support.
At Kingflex, our team constitutes our primary asset. We have fostered a collaborative environment that brings together material scientists, acoustics engineers, and international logistics coordinators.
Our structure features a specialized R&D wing consisting of 8 professional engineers tasked with optimizing the viscoelastic properties of our NBR/PVC polymer formulations. They are supported by 6 international sales consultants who ensure compliance with global tender requirements and 230 technicians on our automated production lines.
Comprehensive product specifications for mechanical engineers, specifiers, and procurement officers.
Material: NBR/PVC Blend
Material: NBR/PVC Blend
| Property Checked | Test Standard Applied | Typical Values Observed | Acoustic & Mechanical Benefit |
|---|---|---|---|
| Closed Cell Ratio | ASTM D2856 | > 98% | Prevents moisture ingress, preventing localized corrosion under insulation (CUI). |
| Density Range | ASTM D1622 | 40 - 55 kg/m³ | Optimal mass-air ratio for absorption of structure-borne noise. |
| Thermal Conductivity | ASTM C518 | ≤ 0.034 W/(m·k) at 0°C | Prevents energy loss and controls condensation on cold drainage systems. |
| Fire Rating Classification | BS 476 Part 7 / UL 94 | Class 1 / V-0 Rated | Self-extinguishing behavior; does not sustain flame spread. |
| Sound Absorption Coefficient | ISO 354 | up to 0.45 (NRC) | Substantially dampens high-frequency rushing sounds inside soil pipes. |
Massive capacity, robust raw material sourcing pipelines, and strategic logistics enable cost competitiveness and supply security.
We run continuously monitored high-output extrusion and foaming lines, generating over 600,000 cubic meters annually to prevent bottlenecks during major project schedules.
Situated in Dacheng, the green building material capital of China, we maintain partnerships with upstream polymer suppliers, stabilizing pricing against global petrochemical shifts.
Exporting to 66+ countries has refined our custom packaging, sea freight coordination, and container load optimization, ensuring products arrive uncompressed and ready to install.
Tailored engineering strategies to meet localized construction codes and environmental challenges.
Combats condensation and fluid turbulence in ceiling voids of commercial offices and five-star luxury hotels. Eliminates customer complaints regarding wastewater flushing sounds.
Dampens low-frequency vibrations generated by high-velocity industrial wastewater pumping systems, maintaining local occupational health and safety standards.
Provides thermal barrier protection to prevent condensation and freezing in municipal cold water networks, while dampening water-hammer shockwaves.
How Kingflex is innovating to meet next-generation green building regulations and net-zero targets.
Introducing micro-filled heavy mass particulates into NBR/PVC polymer matrices to target low-frequency noise (50Hz - 200Hz).
R&D focus on replacing petroleum-based raw materials with plant-derived renewable prepolymers, lowering cradle-to-gate carbon footprints.
Embedding flexible sensor ribbons underneath the acoustic layers to monitor pipe surface temperatures and alert managers to leakages.
Ensuring our products satisfy global building code specifications through rigorous verification protocols.
We believe in transparent communications. Below are verified logs and confirmations of orders delivered successfully to overseas contracting partners.
Review the industrial spaces where our raw ingredients are converted into high-density soundproofing products.
Technical responses regarding installation, performance standards, and customized solutions.
It is primarily applied in central HVAC air ducts, domestic hot and cold air conditioning lines, building wall thermal barriers, industrial process pipelines, and sound insulation systems for wastewater soil pipes.
Yes. Our rubber foam insulation has built-in flame retardants, allowing it to meet global structural and civil safety requirements, including BS 476 Class 1 and UL94 V-0 certifications.
Rubber foam features a flexible, closed-cell, moisture-proof structure, making it suitable for HVAC, chilled lines, and acoustic wrapping. Rock wool is a high-temperature resistant, fibrous material best suited for high-temperature steam lines and direct fire walls.
Yes, we support comprehensive OEM/ODM design requests—offering customized wall thicknesses, inner diameters, adhesive backings, and exterior coatings to match specific project specifications.
Kingflex products have successfully passed BS 476, CE, REACH, RoHS, UL94, and ASTM testing sequences. This ensures seamless integration into projects with strict compliance standards.
Yes. We implement a serialization code system on our products, allowing us to trace materials back to their original production date, batch, and chemical inputs.
Our standard production machinery easily handles thicknesses ranging from 6mm to 50mm, with custom slit widths available upon request.
When installed correctly according to technical guidelines, our products maintain structural integrity and insulating properties for 10 to 15 years in typical environments.
Factory direct pricing on NBR/PVC elastomeric formulations for building acoustics, thermal stability, and industrial refrigeration.
