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PU25
Polyurethane Multi-purpose Construction Joint Sealant
One-part polyurethane sealant that cures with moisture in the air into a flexible, strong joint.
- Pack
- 310 ml cartridge, 600 ml sausage
- Colour
- White, grey, black
- Standard
- Movement ±25%, class 25LM (CNS 8903 / ASTM C920)
- Group
- Sealants
Where to use it
- Bonding and sealing joints in concrete, wood, aluminium, lacquered metals, polyester, glass and stone
What it does well
- Single component
- Very good adhesion on most materials
- Flexible and resistant once cured
How to use PU25
Four steps, as printed in the Aftek catalogue. Where the catalogue is silent we say so - ask for the data sheet.
- Concrete, stone and PVC: a clean surface is enough.
- Steel and aluminium: priming is recommended.
- Not recommended on glass.
- Do an adhesion test on site before first use.
- Supplied ready to use - stir well before use.
- One-part product. No mixing.
The catalogue does not give this step. Ask us for the product data sheet before you start.
- Cures with the moisture in the air.
- After drying it can be painted with water-based paint. Test first before using oil-based paint.
Source: Aftek catalogue: All Products p.26, Sealants p.2 and p.4; nanpao.com PU25
Jobs it is part of
PU25 in the order of the full Aftek system.
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