BOSS - 03642RD10 - 816 Intumescent FireStop Sealant

Item: BOSS81610
MFG: 03642RD10
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Boss® 816 UL Classified Intumescent Firestop Sealant Is A Fire Rated, General Purpose Sealant For Use On Through-Penetrations and Construction Joints. It Is A Single Component, Non-Sag, Waterbased Sealant and Smoke Seal That Is Easy To Apply and Clean Up.

Boss® 816 Will Prevent The Spread Of Toxic Gases, Water, Smoke and Fire Through Joint Openings and Through Penetrations. Is Suitable For Adhesion To Almost Any Surface and Remains Flexible, Making It Ideal For Both Horizontal and Vertical Joints, Subject To Vibration or Dynamic Movement. It Bonds Quickly, Has Excellent Adhesion and Is Non-Toxic.

Boss® 816 Is Protected Against Mold Growth with A Combination Of Biocides In Both Wet and Dry Stages.

It Has Been Tested To The Following Specifications:

  • UL 1479 (Astme-814),
  • UL 2079 (Astm E-1966),
  • Astm E-84 (0-Flame, 0-Smoke),
  • Astm E-90 (Stc 53).


  • Bonds Quickly with Excellent Adhesion
  • Mildew Resistant
  • Remains Flexible
  • Voc Compliant
  • Excellent Freeze/Thaw Properties
  • Safe To Use and Handle
  • Water Based and Paintable
  • 12 Month Shelf Life

California residents: see Proposition 65 Warning

Features and Specification

Weight 1.200000
Package Length 5.875000
Package Height 9.312500
Package Weight 14.400000
Package Width 7.875000
Ratings UL 1479 (ASTM E-814)
Service Temperature -20°F to 185°F (-28.8°C to 85°C)
Shelf Life 1 Year from the date of shipment
Includes 4 Inch Nozzle
Length 2.000000
Viscosity Not Provided
UPC 787930816108
UL Recognized Yes
UL Listed Yes
Type FireStop
Width 2.000000
Size 10.1 Ounces
Solvent No
Solids Content > 90 %
UV Resistant No
Standards UL 1479, ASTM E-814, IBC/IRC, BOCA National building Code, CABO one and two family dwelling code, UBC (1997), and UL Classified
Storage Temperature 35°F to 120°F (1.6°C to 48.8°C)
Temperature Range -40°F to 185°F (-40°C to 85°C)
Tensile Strength Not Provided
Cubic Measurement 0.019100
Color Red
Dimensional Weight 3.000000
Coverage Not Provided
Composition Latex
Comments/Notes Can Contribute Credits
EAN 0787930816108
Brand BOSS®
Base Latex
Application Intumescent Firestop Sealant For Fire-Rated Assemblies. Prevents Spread Of Toxic Gases, Water, Smoke, And Fire Through Joint Openings And Through Penetrations.
Dry Time 21-28 DAYS
Application Temperature 40°F to 110°F (4.4°C to 43.3°C)
Height 8.250000
Functions FireStop
For Use With Through-penetrations and construction joints
Flash Point Undetermined
Fire Rating 1- 3 Hour


picture_as_pdf safety data sheet

picture_as_pdf specification sheet