Two-layer car sound deadener SGM Classic Combi
Multi-layer composite car sound deadening SGM Combi 4 mm is a specialized, high-rigidity frame-reinforced vibration damper. Its unique two-layer structure combines mastics of different densities on a 90-micron foil backing, delivering maximum damping performance in areas subjected to extreme vibrational loads.
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Sheet size, cm
50x70
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MLF, c.u.
The mechanical loss factor shows how effectively the material absorbs vibration energy: 0 — the material does not damp vibration at all, 1 — ideal absorption.
0.49
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Application areas
floor, trunk, arches, engine shield
Sheet thickness:
Description
Multi-layer composite car sound deadening SGM Combi 4 mm is a professional, high-rigidity frame vibration damper from Classic Line SGM products with an innovative two-layer structure on a 90-micron foil. It utilizes a synergistic combination of two specialized mastics: a rigid bitumen-polymer layer for structural integrity and sound pressure resistance, and a high-adhesion butyl rubber layer for secure bonding and easier installation. This unique composition creates a reinforced damping effect where the mass of the bitumen and the elasticity of the butyl rubber work together to counteract low-frequency resonances in the vehicle’s body. With stable performance from -40°C to +100°C and an easy-to-install backing with siliconized release paper, SGM Combi is the ideal solution for all areas subjected to extreme vibration loads.
Multi-layer composite car sound deadening SGM Combi 4 mm vibration damper is engineered to deliver maximum sound insulation performance in both cars and special-purpose vehicles. Recommended for high-vibration areas, it is also ideal for preparing vehicles for SPL (Sound Pressure Level) competitions. It effectively reinforces the body structure, combating low-frequency resonances from powerful audio systems and micro-vibrations generated under all possible operating conditions.
Advantages
- Reinforced frame structure of the material;
- Reinforced frame structure of the material;
- Ultra-effectively composition achieved through the synergy of two mastics.
- Maximum structural and secondary noise insulation from a 4 mm profile;
Recommended application areas
Specifications
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Sheet thickness, mm
4
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Sheet size, cm
50x70
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Weight per 1 m², kg
5.5
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MLF, c.u.
The mechanical loss factor shows how effectively the material absorbs vibration energy: 0 — the material does not damp vibration at all, 1 — ideal absorption.
0.49
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Adhesion to metal, N/cm²
How strongly the soundproofing material bonds to the metal car body: how firmly it sticks and how hard it is to tear off.
from 5
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Foil thickness, µm
90
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Sheets per pack, pcs
10
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Operating temperature range, °C
from -40 to +100
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Installation method
requires heating
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Moisture resistance
yes
