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


picture_as_pdf safety data sheet

picture_as_pdf specification sheet