- Description
- Acoustic Performance
- Trade Information
Description
Isomat-HD is a flexible, open-cell engineered elastomeric foam designed for effective airborne noise control and acoustic insulation. Its complex pore structure and optimized airflow resistivity deliver high sound absorption along with inherent vibration-damping performance. The material is suitable for HVAC systems, industrial acoustics, and architectural noise-control applications where durability, fire safety, and long-term stability are required.
Key Features & Benefits
- High airborne sound absorption efficiency
- Inherent vibration damping due to elastomeric structure
- Dust-free and fibre-free construction
- Fire-retardant performance
- High elasticity, flexibility, and resilience
- Easy to cut, fabricate, perforate, laminate, emboss, and die-punch
- Resistant to moisture, chemicals, and microbial growth
- CFC and HCFC free, green-building compliant
Technical Specifications
| Property | Test Method | Unit | Value |
|---|---|---|---|
| Density | – | kg/m³ | 200 – 220 |
| Maximum service temperature | – | °C | +85 |
| Minimum service temperature | – | °C | -20 |
| Thermal conductivity | ASTM C 518 | W/m·K | 0.05686 |
| Tensile strength @ break | ASTM D 3575 | kg/cm² | ≥ 1.5 |
| Elongation @ break | ASTM D 3575 | % | ≥ 100 |
| Tear strength | – | kg/cm | ≥ 7.0 |
| Water absorption | – | % | ≤ 10.0 |
Fire Performance
| Parameter | Standard | Classification |
|---|---|---|
| Flammability | UL 94 | HF-1 |
| Surface spread of flame | BS 476 Part 7 | Class 1 |
Acoustic Performance
Noise Reduction Coefficient (ASTM C 423 / ISO 354)
| Thickness | NRC |
|---|---|
| 10 mm | 0.35 |
| 15 mm | 0.50 |
| 20 mm | 0.55 |
| 25 mm | 0.60 |
Weighted Sound Absorption Coefficient (EN ISO 11654)
| Thickness | αw | Absorption Class |
|---|---|---|
| 10 mm | 0.20 | E |
| 15 mm | 0.30 | D |
| 20 mm | 0.40 | D |
| 25 mm | 0.45 | D |
Standard Sizes
- Thicknesses: 10 mm, 15 mm, 20 mm, 25 mm, 50mm
- Standard sheet size: 1000 × 1000 mm
- Other thicknesses available on request subject to MOQ
Recommended Applications
- HVAC duct and AHU lining
- Plant rooms and pump rooms
- Industrial acoustic enclosures
- Generator and genset canopies
- Marine and offshore installations
- Piping acoustic lining
- Home theatres and cinema halls
- Room acoustics and appliance noise control
All specifications are based on manufacturer laboratory test data and are provided for reference purposes only.




















