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12-Ounce Fireblock Orange Insulating Foam Sealant
- Mfg.#
- 99112831
- Sku#
- 956490
- Expands to fills, seals and insulates gaps up to 3/4 in
- Adheres to wood, metal, masonry, glass and most plastics
- Impedes spread of fire and smoke through service penetrations
- Seals service penetrations between floors
- Seals electrical runs through wall studs
* Estimated stock levels as of Thu, Mar 5, 2026. All items subject to prior sale. Prices may vary between stores and online. Please call ahead to confirm availability of items marked as Limited Stock.
Description
GREAT STUFF™ fire block insulating foam sealant is a ready-to-use, minimal-expansion insulating foam sealant that fills and insulates gaps up to 3/4 in to restrict airflow. This distinctly orange solution seals electrical wiring run through wall studs as well as service penetrations in walls and between floors to provide a simple, cost-effective way to maintain the continuity of an approved fire block material throughout the house.
Specifications
General
| Color | Orange |
|---|---|
| Compositions | Diphenylmethane Diisocyanate, Isomers and Homologues, 4,4 ft -Methylenediphenyl Diisocyanate, Polymethylenepolyphenylisocyanate, Propoxylated Glycerin Polymer, Polymethylenepolyphenyl Polyisocyanate, Polypropylene glycol Copolymer, Isobutane, Tris(1-chloro-2-propyl) Phosphate, Paraffin waxes and Hydrocarbon Waxes, Chlorinated, Methyl Ether, Propane |
| Curing time | 8 hr |
| Flash Point | -155-degree F |
| Form | Foam |
| Odor/Scent | Mild |
| Specific Gravity | 1.069 |
| Type | Sealant |
| Vapor Pressure | 1151 hPa |
Manufacturing Details
The following information is subject to change without notice
| Country of Origin | US |
|---|---|
| Shop USA | Yes |
Dimensions
| Size | 12 oz |
|---|
Label Information
| Certification, Codes, Standards | ASTM E84/E814 Specified; UL Listed |
|---|
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