Boiler Adhesives | McMaster-Carr

	Maximum Temperature Maximum Temperature

2000° F

2300° F

4000° F

	For Use On For Use On

	Container Type Container Type


Pail	Tube

Cartridge	Syringe

Jar

	For Joining For Joining

Ceramic

Metal

Masonry

	Color Color

	Black		Gray
	Beige		White

	Container Size Container Size

	Reaches Full Strength Reaches Full Strength

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

RoHS Compliant

	Type Type

Adhesive

Surface Filler

	Consistency Consistency

Thick Liquid

Paste

Putty

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

REACH Compliant

	Minimum Temperature Minimum Temperature

-300° F

Not Rated

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

DFARS Specialty Metals
COTS-Exempt

	Begins to Harden Begins to Harden

15 min.

20 min.

60 min.

	Viscosity Viscosity

	Thermal Conductivity Thermal Conductivity

0.288 W/m-K

0.865 W/m-K

1.44 W/m-K

	Maximum Gap Size Filled Maximum Gap Size Filled

0.125"

0.25"

	Approximate Coverage @ Thickness Approximate Coverage @ Thickness

20 Products

About Structural Adhesives

Seal fiberglass gaskets into stove doors as well as seals cracks in metal.

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hrs.	Heating Requirements to Reach Full Strength	Max. Temp., °F	Color	For Use On		Each
2.3	Tube	60	3	1 hr. air dry then 2 hrs. @ 500° F	2000°	Black	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Fiberglass, Masonry	0000000	00000

Thick High-Temperature Gasketing Adhesives in Cartridges

The adhesive seals fiberglass gaskets into stove doors as well as seals cracks in metal. Use the cartridge with a standard caulk gun for quick and easy dispensing.

Container Size, fl. oz.	Begins to Harden, min.	Reaches Full Strength, hrs.	Heating Requirements to Reach Full Strength	Max. Temp., °F	Color	For Use On		Each
10.3	60	3	1 hr. air dry then 2 hrs. @ 500° F	2000°	Black	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Fiberglass, Masonry	0000000	000000

Thin High-Temperature Gasketing Adhesives

This adhesive is easy flowing for bonding fiberglass gaskets to cast iron and steel.

Container
Size, fl. oz.	Type	Begins to Harden, min.	Reaches Full Strength, hrs.	Heating Requirements to Reach Full Strength	Max. Temp., °F	Color	For Use On		Each
2.3	Tube	60	3	1 hr. air dry then 2 hrs. @ 500° F	2000°	Black	Steel, Cast Iron, Fiberglass	0000000	00000

Thin High-Temperature Gasketing Adhesives in Cartridges

The adhesive is easy flowing for bonding fiberglass gaskets to cast iron and steel. Use the cartridge with a standard caulk gun for quick and easy dispensing.

Container Size, fl. oz.	Begins to Harden, min.	Reaches Full Strength, hrs.	Heating Requirements to Reach Full Strength	Max. Temp., °F	Color	For Use On		Each
10.3	60	3	1 hr. air dry then 2 hrs. @ 500° F	2000°	Black	Steel, Cast Iron, Fiberglass	0000000	000000

Extreme-Temperature Gasket Maker Sealants in Cartridges

These gasket makers form a tight seal on furnace doors, exhaust systems, stoves, and other high-temperature applications. They are fire resistant and resist most acids, solvents, and corrosives. Use cartridges with a standard caulk gun for quick and easy dispensing. Gasket makers are used in place of rubber, cork, and other traditional gasket materials for a form-in-place seal and to make it easy to form irregular-shaped gaskets.

				Temp. Range, °F
Container Size, fl. oz.	Max. Gap Size Filled	Begins to Harden, min.	Reaches Full Strength, hrs.	Min. Temp.	Max. Temp.	Color	For Use On		Each
11	0.125"	20	72	Not Rated	2300°	Gray	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Ceramic	0000000	000000
11	0.25"	20	72	-300°	2300°	Gray	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Ceramic	0000000	00000

Extreme-Temperature Gasket Maker Sealants

Use these gasket makers to form a tight seal on furnace doors, exhaust systems, stoves, and other high-temperature applications. They are fire resistant and resist most acids, solvents, and corrosives. They are used in place of rubber, cork, and other traditional gasket materials for a form-in-place seal and they make it easy to form irregular-shaped gaskets.

Container					Temp. Range, °F
Net Weight, lbs.	Type	Max. Gap Size Filled	Begins to Harden, min.	Reaches Full Strength, hrs.	Min. Temp.	Max. Temp.	Color	For Use On		Each
1	Jar	0.125"	20	72	Not Rated	2300°	Gray	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Ceramic	0000000	000000
3 1/2	Jar	0.25"	20	72	-300°	2300°	Gray	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Ceramic	0000000	000000
7	Jar	0.25"	20	72	-300°	2300°	Gray	Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Ceramic	0000000	000000

Ceramic Adhesives

Often used for bonding and repair on exhaust systems, diesel engines, and gas turbines, these adhesives withstand high temperatures and provide excellent electrical insulation. Pastes will not drip or sag while hardening on a vertical surface, while thick liquids flow into small spaces and are easy to spread.

Container
Size, fl. oz.	Type	Begins to Harden	Reaches Full Strength	Thermal Conductivity, W/m-K	Consistency	Viscosity, cP	Max. Temp., °F	Color	For Joining		Each
8	Pail	20 min.	48 hrs.	0.865	Thick Liquid	90,000	2300°	Gray	Ceramic, Metal	0000000	000000
8	Pail	20 min.	48 hrs.	0.865	Paste	130,000	2300°	Gray	Ceramic, Metal	0000000	00000
8	Pail	20 min.	48 hrs.	0.865	Paste	190,000	2300°	Gray	Ceramic, Metal	0000000	00000
16	Pail	15 min.	24 hrs.	1.44	Thick Liquid	22,500	4000°	Beige	Ceramic, Masonry	0000000	000000
32	Pail	15 min.	24 hrs.	1.44	Thick Liquid	22,500	4000°	Beige	Ceramic, Masonry	0000000	000000
32	Pail	20 min.	24 hrs.	0.288	Thick Liquid	35,000	2300°	White	Ceramic	0000000	000000
64	Pail	20 min.	48 hrs.	0.865	Paste	130,000	2300°	Gray	Ceramic, Metal	0000000	000000
64	Pail	20 min.	48 hrs.	0.865	Paste	190,000	2300°	Gray	Ceramic, Metal	0000000	000000

High-Temperature Surface Fillers

Able to withstand temperatures up to 2300° F, these ceramic surface fillers are often used as thermal insulation on brick, mortar, burner blocks, furnace holders, and thermocouples.

Container
Size	Type	Begins to Harden, min.	Reaches Full Strength, hrs.	Consistency	Approximate Coverage @ Thick.	For Use Outdoors	Color	For Use On		Each
4 fl. oz.	Syringe	20	8	Putty	20 sq. in. @ 1/4"	No	White	Ceramic, Masonry	0000000	000000
11 fl. oz.	Cartridge	20	8	Putty	60 sq. in. @ 1/4"	No	White	Ceramic, Masonry	0000000	00000
1 gal.	Pail	20	8	Putty	720 sq. in. @ 1/4"	No	White	Ceramic, Masonry	0000000	000000