BOSS - 02455BR10 - 333 Triple Expanding Foam, 24 oz.

Item: BOSS33324
MFG: 02455BR10
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Triple Expanding Foam, 24 oz.


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. Has Excellent Insulating Properties and Superb Adhesion To Virtually All Building Materials.


  • Air Sealing Partition Walls with Ceilings
  • Through Penetrations Around Cables and Pipes
  • Seams Between Chimneys, Roof Protection, Roof Panels and Wall Panels


  • Meets Ca-25-4UL 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 Californiaair Resource Board Method 310Voc Compliant

California residents: see Proposition 65 Warning

Features and Specification

Height 11.1250
Includes Straw
Length 2.5000
Composition Polyurethane Foam
Coverage 41.6 Liters Freely Foamed
Dry Time 24 Hours
EAN 0787930333247
Functions Filling Voids
Fire Rating ASTM E-84-04 UL 723 Fire Testing. Flame Spread-10, Smoke Developed-30
Flash Point -21°C
For Use With With building materials for weatherproofing
Width 2.5000
Storage Temperature >90°F (32.2°C)
Temperature Range -40°F to 200°F (-40°C to 93.3°C)
Tensile Strength Not Provided
UL Listed Yes
UL Recognized No
UPC 787930333247
UV Resistant No
Viscosity Not Provided
Standards CA-25-4, EPA Method 24, CARB Method 310
Solvent No
Ratings Flame Spread - 15; Smoke Developed - 35
Package Height 11.1417
Package Length 7.8740
Package Weight 21.9600
Package Width 11.0236
Solids Content Not Provided
Service Temperature -40°F to 200°F (-40°C to 93.3°C)
Shelf Life 1 Year from the date of shipment
Size 24 Ounce
Comments/Notes Can Contribute Credits
Weight 1.8300
Application Fills Holes, Gaps, And Cracks More Completely Than Standard Caulk. Has Excellent Insulating Properties And Superb Adhesion To Virtually All Building Materials.
Application Temperature 40°F to 115°F (4.4°C to 46.1°C)
Approvals UL723
Base Polyurethane foam
Brand BOSS®


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