PU Foam Spray
Boss 333 is a ready-to-use, multi-purpose, polyurethane foam that expands to three times its original volume on contact with air. The expanding action fills holes, cracks and gaps more completely than standard caulks. Boss 333 has excellent insulting properties and adhesion to virtually all building materials.
Typical Properties:
Density, lbs./ft.3 | ASTM D 1622 | 1.3-1.8 |
Compression Strength, psi | ASTM D 1621 | 11 |
Tensile Strength, psi | ASTM D 1623 | 33 |
Shear Strength, psi | ASTM C 273 | 18 |
Shear Strain, psi | ASTM C 273 | 57 |
Closed Cell Content, % | ASTM D 2856 | 70 |
Thermal Resistance, R value | ASTM C518 | 5.4”/1” |
Water Vapour Transmission, perm inch | ASTM E 96 | 3.3 |
Maximum Service Temp | 240oF(115.6oC) | |
Ideal Application Temp |
| 60oF to 90oF(15.6oC to 32.2oC) |
UL Classified | ASTM E 84 | 9.8 |
Flame spread | 20 | |
Smoke Developed | 25 |
