BOSS – 333 Triple Expanding Foam
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. Meets CA-25-4 and is UL tested to meet ASTME-72.
• Ready to use 12-oz Straw Can
• Easy-to-use, multi-purpose urethane foam
• Triple Expanding, it expands three times its original volume!
• Adheres to all building materials except Teflon, silicone and polyethylene
• Weatherproofs against wind and moisture
• Seals by expanding into gaps, cracks and crevices
• Uses include insulating, sealing and filling gaps around pipes, plumbing fixtures, ductwork and foundations
• UL Classified Tested to ASTM E-84
• Complies with EPA Method 24 and California Air Resource Board Method 310
To view the most recent Technical Data Sheet, please click here.