One Part Fire Rated Polyurethane Sealant
• Fast Tack free time and cure rate
• Excellent adhesion to most common building materials
Bostik Seal N Flex AP is a general purpose, one component, polyurethane construction sealant. When cured it will form a tough, flexible seal capable of cyclic expansion and compression movement of 50% (± 25%) of the original installed joint width.