Mortar | McMaster-Carr

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16 Products

Mortar Mixes

Used for brick, block, and stone laying as well as for repairing masonry, mortar mixes consist of fine sand and masonry cement. Mix it with water.

	Container
	Net Wt., lb.	Type	Begins to Harden, hr.	Reaches Full Strength, hr.	Consistency	Mixing Req.	Mix Ratio	Approx. Coverage @ Thk.	Max. Thk.	For Use Outdoors	Application Temp. Range, ° F	Color	For Use On		Each
Cement Surface Fillers



		60	Bag	4	24	Powder	Yes	8:1	25 ft² @ 1/4"	1/2"	Yes	40 to 90	Gray	Masonry, Stone	76805T104	000000

Firebrick Bonding Mortar

$Image of Product. Front orientation. Refractory Cement. Firebrick Bonding Mortar.$

Lay, coat, and bond firebricks. Apply this mortar with a trowel. One pail sets approximately 40 bricks.

Container Net Wt., lb.	Container Type	Approx. Brick Coverage	Max. Temp., ° F	Density, lb/ft³	Color		Each
15	Pail	40	3,000	129	Gray	9368K6	000000

Extreme-Temperature Refractory Cement

$Image of Product. Front orientation. Refractory Cement. Extreme-Temperature Refractory Cement.$

Set and repair cast iron and steel furnaces, heaters, stoves, and boilers with this ready-to-use cement. It experiences minimal shrinkage for a permanent smokeproof and gasproof joint. Apply with a trowel or a spatula. A minimum temperature of 212° F is required to harden. Cut hardened cement with a carbide-tipped saw.

Container
Size	Type	Approx. Coverage Area, ft²	Cure Temp., ° F	Max. Temp., ° F	Density, lb/ft³	Color		Each
8 fl. oz.	Pail	0.63	212	2,500	122	Beige	9372K85	00000
64 fl. oz.	Pail	5	212	2,500	122	Beige	9372K86	00000
1 gal.	Pail	10	212	2,500	122	Beige	9372K87	00000

Masonry Trowels


Steel Style A	Steel Style B	Steel Style C	Steel Style D

Spread, scrape, and shape mortar.

				Handle
	Style	Lg.	Wd.	Lg.	Material		Each
Steel



		A	5"	2"	4 3/4"	Rubber	7606T1	000000


		B	5"	2 1/2"	4 5/8"	Wood	7604T1	00000
		C	6 3/4"	1/2"	4 3/4"	Rubber	7608T3	00000
		D	11"	4 3/4"	5 1/4"	Rubber	7605T4	00000

Mortars

Hold substances so you can grind them with a pestle. Made of porcelain that withstands chemicals and extreme temperatures, these mortars are often used in labs.

Mortars				Pestles
OD	Material		Each		Each
4 1/8"	Porcelain	43095T52	000000	43095T62	000000
5 5/8"	Porcelain	43095T53	00000	43095T63	00000
8"	Porcelain	43095T54	000000	43095T63	00000

Fire-Stop Cement


	Pail	Bag

Seal openings in fire-resistant floors and walls to stop the spread of smoke and flames. Often used to fill gaps around pipes or conduit, this cement forms a rigid, tight-fitting shield. It’s heavier and messier to apply than fire-stop blocks or sheets, but it's an economical choice for covering a large area.

This cement comes as a powder—mix in water until you reach the consistency you need. The thicker the cement, the better it will stick to walls; thinner cement dries with a smoother finish on floors.

Pail—Cement in a pail is best for small, infrequent jobs. The pail is resealable and has a carrying handle.

Paintable—You can also paint over this cement once it dries.

Container
Size, gal.	Net Wt., lb.	Type	Color	Application Temp., ° F	Fire-Stop Application	Fire Safety Rating	Flammability Rating	Specs. Met	Performance		Each



	—	45	Bag	Light Red	40 to 120	Through Penetration	4 hr.	UL 1479	ASTM E814, ULC-S115	Paintable	93355K23	0000000


	5	28	Pail	White	40 to 120	Through Penetration	3 hr.	UL 1479	ASTM E814, ULC-S115	Paintable	93355K25	000000

Pestles

Pair with a mortar to grind substances into a fine paste or powder. Made of porcelain that withstands chemicals and extreme temperatures, these pestles are often used in labs.

For Mortar OD	Material		Each
4 1/8"	Porcelain	43095T62	000000
5 5/8", 8"	Porcelain	43095T63	00000