The Grafen PU40 Polyurethane Sealant 600ml Black is a professional one-component polyurethane sealant with excellent adhesion, high elasticity, and long-lasting performance.
Designed for sealing and bonding joints in construction, automotive, and industrial applications.
Once cured, it forms a strong, flexible, and waterproof joint, resistant to mechanical stress, vibration, moisture, and weathering.
The black colour provides a clean, professional finish, ideal for dark materials and metal surfaces.
Application
- Sealing joints in concrete, steel, and wooden structures
- Bonding panels, profiles, and construction elements
- Suitable for automotive, steel, and industrial assembly
- For indoor and outdoor use
Instructions for Use
- Ensure the surface is clean, dry, and free from dust, oil, and grease.
- Insert the 600ml foil sausage into a pneumatic or manual gun.
- Cut the nozzle diagonally to the desired joint width.
- Apply evenly and press firmly into the joint.
- Smooth immediately with a suitable tool.
- Allow to fully cure before painting or exposing to load.
Product Specifications
- Content: 600 ml (foil sausage)
- Colour: Black
- Type: Polyurethane sealant
- Application temperature: +5°C to +40°C
- Temperature resistance: -30°C to +90°C
- Skin formation: approx. 45–60 min
- Curing rate: 2–3 mm / 24h
- Shore A hardness: approx. 40 → medium elasticity – balance of flexibility and strength
- Shelf life: 12 months from manufacturing date
