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Fire-Stop Caulk
Caulk
Spray-On Caulk
Cartridge
Pail
Stick
Easy to apply and quick to set, this caulk is a popular choice for sealing small openings in fire-resistant walls and floors. It’s often used to line seams or fill gaps around cables or pipes that run between rooms. You can use it alone or with other fire-stop products. This caulk is tested to ASTM and UL standards for stopping the spread of smoke and flames. It resists vibration, so it will flex with movement rather than crack or pull away from surfaces. Apply with a caulk gun or trowel.
Spray-on caulk is used to evenly coat hard-to-reach openings. It’s often used to seal the spaces where fire-rated walls, floors, and ceilings meet.
Acrylic caulk is water-based, which is the most common formula for fire-stop caulk. It’s a good choice for most applications. Expandable caulk is used to seal the area around PVC pipes, cables, and other equipment that can melt or shrink during a fire. When it’s heated, it expands to fill gaps.
Silicone caulk forms a watertight, flexible seal. Use it to seal openings that are exposed to weather, washdowns, or standing water.
| Container Size | Application Temperature, °F | Color | Fire Rating, hrs. | Flammability Rating | Specifications Met | Each | |
Caulk | |||||||
|---|---|---|---|---|---|---|---|
Acrylic | |||||||
| 10.3 fl. oz. Cartridge | 40° to 120° | Red | 4 | ASTM E84 10/0 for Flame and Smoke, UL 723 10/0 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1966, UL 2079, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 0000000 | 000000 |
| 30 fl. oz. Cartridge | 40° to 120° | Red | 4 | ASTM E84 10/0 for Flame and Smoke, UL 723 10/0 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1966, UL 2079, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 0000000 | 00000 |
Acrylic—Expandable | |||||||
| 10.3 fl. oz. Cartridge | 40° to 120° | Red | 4 | ASTM E84 0/0 for Flame and Smoke, UL 723 0/0 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1966, UL 2079, ASTM G21, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 00000000 | 00000 |
| 30 fl. oz. Cartridge | 40° to 120° | Red | 4 | ASTM E84 0/0 for Flame and Smoke, UL 723 0/0 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1966, UL 2079, ASTM G21, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 00000000 | 00000 |
| 5 gal. Pail | 40° to 120° | Red | 4 | ASTM E84 0/0 for Flame and Smoke, UL 723 0/0 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1966, UL 2079, ASTM G21, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 00000000 | 000000 |
Silicone—Watertight | |||||||
| 10.1 fl. oz. Cartridge | -20° to 120° | Gray | 3 | ASTM E84 3/22 for Flame and Smoke, UL 723 3/22 for Flame and Smoke | ASTM C920, ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1399, ASTM E1966, UL 2079, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 00000000 | 00000 |
| 20.2 fl. oz. Stick | -20° to 120° | Gray | 3 | ASTM E84 3/22 for Flame and Smoke, UL 723 3/22 for Flame and Smoke | ASTM C920, ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1399, ASTM E1966, UL 2079, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 00000000 | 00000 |
Spray-On Caulk | |||||||
Acrylic | |||||||
| 5 gal. Pail | 40° to 120° | Red | 3 | ASTM E84 0/0 for Flame and Smoke, UL 723 0/0 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM E1966, UL 2079, ASTM G21, FM Approved, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115 | 00000000 | 000000 |
Fire-Stop Putty
 |  Pad |
 Stick |
Hand-mold this putty into small openings in fire-resistant walls and floors. Often used to seal the area around PVC pipes or cables, it expands when heated to fill the gaps left if your equipment melts. It’s tested to ASTM and UL standards to stop the spread of smoke and flames.
Putty pads are often used to seal the area around electrical boxes. Mold them onto the sides of the box before installing it in a wall or floor.
Each
| Form | Lg. | Wd. | Thick. | Color | Application Temperature, ° F | Fire Rating, hrs. | Flammability Rating | Specifications Met | Each | |
| Pad | 7" | 7" | 1/8" | Red | 40° to 120° | 3 | ASTM E84 10/125 for Flame and Smoke, UL 723 10/125 for Flame and Smoke | ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 0000000 | 00000 |
| Stick | 10" | 1 1/2" | 1 1/2" | Red | 40° to 120° | 3 | ASTM E84 10/125 for Flame and Smoke, UL 723 10/125 for Flame and Smoke | ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 0000000 | 00000 |
Package
| Form | Lg. | Wd. | Thick. | Color | Application Temperature, ° F | Fire Rating, hrs. | Flammability Rating | Specifications Met | Pkg. Qty. | Pkg. | |
| Pad | 7" | 7" | 1/8" | Red | 40° to 120° | 3 | ASTM E84 10/125 for Flame and Smoke, UL 723 10/125 for Flame and Smoke | ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 20 | 0000000 | 0000000 |
| Stick | 10" | 1 1/2" | 1 1/2" | Red | 40° to 120° | 3 | ASTM E84 10/125 for Flame and Smoke, UL 723 10/125 for Flame and Smoke | ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 12 | 0000000 | 000000 |
Fire-Stop Electrical Box Inserts
Seal electrical boxes to maintain fire-resistant walls. These inserts mount inside electrical boxes to block the spread of smoke and flames. When heated, they expand to seal gaps, such as those left by melted wire. They fit common box sizes.
Use gaskets when cable or switches have already been installed. They sit just inside your cover plate.
Use pads before cable is installed. The adhesive side sticks to the back wall of your electrical box. They can be used only with metallic boxes.
Gaskets
For NEMA Outlets
For GFCI Outlets
For Toggle Switches
Each
| Industry Designation | For No. of Outlets | For No. of Toggle Switches | Lg. | Wd. | Thick. | Application Temperature, °F | Fire Rating, hrs. | Flammability Rating | Specifications Met | Each | |
For NEMA Outlets | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1 Gang | 2 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 00000 |
| 2 Gang | 4 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 0000 |
For GFCI Outlets | |||||||||||
| 1 Gang | 1 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 0000 |
| 2 Gang | 2 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 0000 |
For Toggle Switches | |||||||||||
| 1 Gang | __ | 1 | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 0000 |
| 2 Gang | __ | 2 | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 0000 |
Package
| Industry Designation | For No. of Outlets | For No. of Toggle Switches | Lg. | Wd. | Thick. | Application Temperature, °F | Fire Rating, hrs. | Flammability Rating | Specifications Met | Pkg. Qty. | Pkg. | |
For NEMA Outlets | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 Gang | 2 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 0000000 |
| 2 Gang | 4 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |
For GFCI Outlets | ||||||||||||
| 1 Gang | 1 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |
| 2 Gang | 2 | __ | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |
For Toggle Switches | ||||||||||||
| 1 Gang | __ | 1 | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |
| 2 Gang | __ | 2 | 5" | 5" | 1/8" | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |
Pads
Each
| Industry Designation | Lg. | Wd. | Thick. | Mount Type | Application Temperature, °F | Fire Rating, hrs. | Flammability Rating | Specifications Met | Each | |
| 1 Gang | 1 13/16" | 2 13/16" | 1/4" | Adhesive Back | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 00000 |
| 2 Gang | 3 3/4" | 3 11/16" | 1/4" | Adhesive Back | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 0000 |
| 2 Gang | 4 3/8" | 4 3/8" | 1/4" | Adhesive Back | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 00000000 | 00000 |
Package
| Industry Designation | Lg. | Wd. | Thick. | Mount Type | Application Temperature, °F | Fire Rating, hrs. | Flammability Rating | Specifications Met | Pkg. Qty. | Pkg. | |
| 1 Gang | 1 13/16" | 2 13/16" | 1/4" | Adhesive Back | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 0000000 |
| 2 Gang | 3 3/4" | 3 11/16" | 1/4" | Adhesive Back | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |
| 2 Gang | 4 3/8" | 4 3/8" | 1/4" | Adhesive Back | 40° to 120° | 2 | ASTM E84 5/5 for Flame and Smoke, UL 723 5/5 for Flame and Smoke | ASTM E90, ASTM E119, UL 263, ASTM E814, UL 1479, ASTM G21, CAN/ULC-S101, CAN/ULC-S102, CAN/ULC-S115, FM Approved | 50 | 00000000 | 000000 |