BOSS® 333 is a ready-to-use, multi-purpose, polyurethane foam that expands to three times its original volume on contact with air. The expanding action fills holes, cracks and gaps more completely than standard caulks. BOSS® 333 has excellent insulating properties and superb adhesion to virtually all building materials
USES

• Air sealing
• Partition walls with ceilings
• Through penetrations around cables and pipes
• Seams between chimneys, roof protection, roof panels and wall panels

FEATURES

• Meets CA-25-4
• UL Classified, Tested to ASTM E-84
• Triple Expanding
• Weatherproofs against wind and moisture
• Fills gaps, cracks and holes
• Seals out insects and pests
• Can be sanded, painted and stained
• Complies with EPA Method 24 and California Air Resource Board Method 310
• VOC Compliant

BOSS® 333 is a ready-to-use, multi-purpose, polyurethane foam that expands to three times its original volume on contact with air. The expanding action fills holes, cracks and gaps more completely than standard caulks. BOSS® 333 has excellent insulating properties and superb adhesion to virtually all building materials
USES

• Air sealing
• Partition walls with ceilings
• Through penetrations around cables and pipes
• Seams between chimneys, roof protection, roof panels and wall panels

FEATURES

• Meets CA-25-4
• UL Classified, Tested to ASTM E-84
• Triple Expanding
• Weatherproofs against wind and moisture
• Fills gaps, cracks and holes
• Seals out insects and pests
• Can be sanded, painted and stained
• Complies with EPA Method 24 and California Air Resource Board Method 310
• VOC Compliant