Intumescents | McMaster-Carr

	Length Length

	Width Width

1 1/2"

28"

36"

	Thickness Thickness

	Fire-Stop Type Fire-Stop Type

	Flange Width Flange Width

1/2"

11/16"

	Mounting Location Mounting Location

Door Frame

Window Frame

	For Door Material For Door Material

Metal

Wood

	Seal Projection Seal Projection

1/16"

7/16"

	Form Form

Pad

Stick

	Fire Rating Fire Rating

2 hrs.

3 hrs.

4 hrs.

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Container Type Container Type

Cartridge

Pail

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	Specifications Met Specifications Met

	Fire Safety Rating Fire Safety Rating

1 1/2 hr. for wood fire doors

3 hr. for metal fire doors

	Fire Safety Standard Fire Safety Standard

UL 10B

UL 10C

	Container Size Container Size

5 gal.

10.3 fl. oz.

30 fl. oz.

	For Pipe OD For Pipe OD

1 1/2"

	Diameter Diameter

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17 Products

Fire-Stop Putty

Pad

Stick

Hand-mold this putty to fill small openings in fire-resistant walls and floors. It expands when heated and forms an insulating char that fills gaps left by melted pipes.

The pad is commonly used to seal openings around electrical boxes.

Form	Lg.	Wd.	Thick.	Color	Application Temperature, °F	Fire Rating, hrs.	Specifications Met		Each
Pad	7"	7"	1/8"	Red	40° to 120°	3	UL 1479, UL 263	0000000	00000
Stick	10"	1 1/2"	1 1/2"	Red	40° to 120°	3	UL 1479	0000000	00000

Fire-Stop Sheets

Cut these sheets to size to seal large openings in fire-resistant walls and floors while allowing built-up heat to escape. They expand when heated and form an insulating char that fills gaps left by melted cable. To install, drill holes and fasten with screws (not included).

Lg.	Wd.	Thick.	Fire Rating, hrs.	Specifications Met		Each
16"	28"	5/16"	4	UL 1479, FM Approved	0000000	0000000
24"	36"	5/16"	4	UL 1479, FM Approved	0000000	000000

Paintable Fire-Stop Caulk

Cartridge

Pail

Seal small openings in fire-resistant walls and floors. Dispense cartridges using a caulk gun.

Expanding caulk expands when heated to fill voids left by melted pipes.

Expanding Caulk
Container Size	Application Temperature, ° F	Color	Fire Rating, hrs.	Specifications Met		Each
10.3 fl. oz. Cartridge	40° to 120°	Red	4	UL 1479, UL 2079	00000000	000000
30 fl. oz. Cartridge	40° to 120°	Red	4	UL 1479, UL 2079	00000000	00000
5 gal. Pail	40° to 120°	Red	4	UL 1479, UL 2079	00000000	000000

Fire-Stop Pipe Collars

Slide these into the small gaps around pipes passing through fire-resistant walls and floors. Collars have a sealant that expands when heated to fill gaps left by melted pipes.

For Pipe OD	Wd.	Thick.	Material	Fasteners Included	Fire Rating, hrs.	Specifications Met		Each
1 1/2"	1 1/2"	1/4"	Aluminum	No	3	UL 1479	000000	000000
2"	1 1/2"	1/4"	Aluminum	No	3	UL 1479	000000	00000
3"	1 1/2"	1/4"	Aluminum	No	3	UL 1479	000000	00000
4"	1 1/2"	1/4"	Aluminum	No	3	UL 1479	000000	00000

Fire-Stop Plugs

Squeeze plugs into small openings in fire-resistant walls and floors. They are reconfigurable, making them useful for applications where cable configurations change frequently. Plugs expand when heated to fill gaps left by melted cable.

Dia.	Thick.	Color	Fire Rating, hrs.	Specifications Met		Each
2"	3"	Red	2	UL 1479	0000000	000000
4"	3"	Red	2	UL 1479	0000000	00000

Fire-Stop Bags

Stack these bags to fill large gaps in fire-resistant walls and floors. They are reconfigurable, making them useful for applications where cable configurations change frequently. Bags expand when heated to fill gaps left by melted cables.

Thick.	Lg.	Wd.	Color	Fire Rating, hrs.	Specifications Met		Each
2"	9"	6"	Red	4	UL 1479, FM Approved	00000000	000000
3"	9"	6"	Red	4	UL 1479, FM Approved	00000000	00000

Adhesive-Back Frame-Mount Weatherstripping

Shown Installed

Graphite/Rubber Blend Flat Seal

No need to drill mounting holes, this weatherstripping has a peel-and-stick adhesive backing. Mount it to the sides and top of a door or window frame to seal gaps.

Flat seals press against surfaces to create a seal. Graphite expands at high temperatures to fill gaps making it good for use with fire rated doors.

For technical drawings and 3-D models, click on a part number.

Flat Seal
Seal Material	For Max. Door Gap	Seal Projection	Flange Wd.	Fire Safety Rating	Lengths, ft.		Per Ft.
Graphite/Rubber Blend	1/16"	1/16"	1/2"	UL 10B, UL 10C: 1 1/2 hr. for wood fire doors, 3 hr. for metal fire doors	4, 17, 21	0000000	00000
Graphite/Rubber Blend	1/16"	7/16"	11/16"	UL 10B, UL 10C: 1 1/2 hr. for wood fire doors, 3 hr. for metal fire doors	4, 8	0000000	0000