BOSS PU SL Polyurethane Sealant

BOSS® PU SL is a polyurethane sealant that is one-component and moisture-curing. Once set, it cures into a flexible, durable, and weather-resistant elastomeric sealant that has very good adhesion to most construction and industrial materials. It can accommodate cyclic joint movement of up to 50% of the joint width.
Features:

• Excellent chemical resistance.
• Good weather and UV resistance.
• No bubble formation.
• No staining on porous surfaces such as marble, granite, and other natural stones.
• Permanently elastic after curing.
• Self-levelling.
• Usable up to a max slope of 3%.
• Very easy to apply.
• Excellent adhesion on many materials.

Applications:

• All usual horizontal building, connection, expansion, and dilatation joints.
• Can withstand long-term intense contact-immersion (up to 1 week) in combination with Primer 100.
• Excellent for sealing of joints in environments where fuel and oil contact can occur.
• Resistant to splash and spillage contact from hydraulic fluids, fuels, lubricants, and oils.
• Sealing of construction joints in concrete floors