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Polyurethane Car window sealant multi-purpose
Testing items | Typical value | Range | |
Before curing | Appearance | Black homogeneous paste | Black homogeneous paste |
Basic chemical composition | polyurethane | polyurethane | |
Density(g/cm³) | 1.35 | 1.3±0.1 | |
Touch dry time(min) | 45 | 20-60 | |
Curing speed in room temperature (mm/24h) | 2.7 | ≥2.5 | |
working temperature(°C) |
| +5~+35 | |
After curing | Stretch modulus (MPA) | 5 | ≥3 |
Elongation at break (%) | 400 | ≥300 | |
Hardness number (A) | 58 | ≥50 | |
Shear strength(MPA) | 2 | ≥2 | |
Tearing strength(KN/mm) | 16 | ≥10 | |
the low temperature properties | To -40℃ no fracture
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Working temperature (℃) | -40~80 | 100 for a moment |



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