Two-layer car sound deadener SGM Prime Dual
Two-layer car sound deadener SGM Prime Dual is a premium, two-layer sound deadener. It features advanced, lightweight butyl rubber compounds separated by a 100-micron aluminum foil core. This unique construction delivers one of the highest damping coefficients in the entire Prime product line.
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Thickness, mm
4
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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.
0.66
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Application areas
floor, trunk, wheel arches, car firewall
Sheet thickness:
Description
SGM Prime Dual is a premium two-layer vibration dampener that combines modified multi-polymer mastics separated by aluminum foil with an outer foil layer of 100 µm thickness. The innovative two-layer construction delivers one of the highest loss factor ratings (0.68) in the Prime lineup at a thickness of 4.0 mm. The material maintains stable performance across a temperature range of –40°C to +120°C and offers enhanced adhesion to metal surfaces. The mounting side is protected by silicone-coated paper.
In the updated from the beginning 2026 version of the material, the adhesive composition has been improved: increased adhesion ensures instant bonding and reliable fixation without preheating. The adhesive upgrade has made it “smart”: the “smart” adhesion of SGM Prime materials allows for adjustments during installation, with adhesion increasing by 25% within 15–20 minutes and by 60–80% or more after 24 hours.
The material features a matte satin aluminum foil treated with «Prime Satin» technology. This technology creates a developed micro-rough surface structure, providing a mechanical bonding effect with the mastic. This significantly enhances interlayer adhesion strength and completely eliminates the risk of dust or moisture penetrating between the second layer of sound absorber and the foil of the primary damping layer.
The material now features a new design and new packaging.
With a thickness of 4.0 mm and a dual-layer mastic construction reinforced with a foil framework, SGM Prime Dual is the ideal solution for targeted installation on wheel arches and in the trunk, where the material delivers maximum effectiveness. The material creates a full-fledged vibration isolation barrier in high-stress areas.
Advantages
- Maximum loss factor of 0.68 achieved through the interaction of two mastics with different formulations;
- Double foil layering creates a reinforced framework that increases damping stiffness;
- Improved adhesion of the mounting layer for reliable fixation;
- Prime Satin technology for improved layer fixation;
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
6.0
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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.
0.66
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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
100
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Sheets per pack, pcs
10
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Operating temperature range, °C
from -40 to +120
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Installation method
does not require heating
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Moisture resistance
yes
