BOSS ® PU 25
 BOSS ® PU 25 is a low modulus one-component, mositure curing Class A polyurethane sealant. It cures into a flexible, durable and weather resistant elastomeric sealant that has very good adhesion to most construction materials. It can accommodate cyclic joint movement of 50% (+/-25%) of the joint width.
BOSS ® PU 25 is recommended for use in moving expansion joints between pre-cast concrete panels, brick and block work, granite, marble and sandstone, aluminum windows, curtain walls and seams on timber, aluminum and UPVC joinery.
| TECHNICAL DATA SHEET |
PRODUCT INFORMATION |
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Typical Properties |
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| Consistency |
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Paste |
| Tooling Time (at 20°C and 50% RH) |
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10 min |
| Skin Formation Time |
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30 min |
| Specific Gravity |
|
1.35 |
| Shore A Hardness |
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approx 0.40 |
| Elongation at Break |
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>550% |
| Tensile Strength |
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20 kg/cm2 |
| Standard Colors |
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black, grey & white |
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22 |
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| Features |
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Excellent adhesion to most building materials |
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Excellent Weatherability |
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Paintable |
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Tools Easily |
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Excellent UV Resistant |
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"Product Range"
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