Is this basically equivalent a firebrick once dried?

Don't know the answer in a scientific way, but I've used it 3 times, over the last 6 years, to repair old fire brick in a manufactured fireplace (worked great) and a broken Chimera. It works. I've had to redo the Chimera a couple of times, but no repair lasts forever, and I believe it works super, and will buy it again. Nothing lasts forever.

I want to use this to plug gaps between the wall and the painted fireplace where some ants are entering. Is this the right stuff?

This product is great for repairing cracks and holes inside the actual fire box. Probably better products to use on the exterior of a fireplace near the wall.

Can you use this to repair crack in clay chiminea?

Sorry, I am not qualified to answer your question...What I used it for, was the stone flooring of my fire place showed small fracture lines..?.As, you are aware to fill in those cracks....You needed to use some form of cement puddy with the added feature of holding high temperatures...Which it did magnificently.

What is the difference between the mortar and cement products?

Rutland's Mortars are smooth-bodied and so are perfect for tuck-pointing or repairing mortar between bricks. Our cements are mostly thicker and have larger pebbles or aggregate in them to strengthen the application. Most all of Rutland cements and mortars are rated above 2,000-F.

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Description

🔥 Seal the heat, save the hearth — repair like a pro!

EXTENDED COVERAGE - Covers approximately 99 feet with a 1/8" bead—maximize every cartridge for efficient fixes.
FIREPROOF STRENGTH - Rated to endure scorching 2000°F heat—built to last as strong as firebrick itself.
PRECISION APPLICATION - Convenient 10.3 oz cartridge designed for seamless, mess-free mortar repairs.
VERSATILE COLOR MATCH - Available in Gray, Buff, and Black to blend perfectly with your fireplace aesthetics.
PROFESSIONAL GRADE CURE - Heat-activated formula sets rock hard, ensuring durable, long-lasting repairs.

Rutland Fireplace Mortar Cartridge is a high-performance, heat-cured silicate paste designed specifically for repairing and bonding firebricks in fireplaces. Rated to withstand extreme temperatures up to 2000°F, it comes in a convenient cartridge form for precise application and is available in multiple colors to match existing mortar. Ideal for interior fireplace repairs, it covers up to 99 feet with a 1/8" bead and cures to a rock-hard finish, ensuring professional-grade durability.

Specifications

Brand	RUTLAND PRODUCTS
Specific Uses For Product	Fireplace Repair
Material	Volcanic rock
Item Form	Paste
Special Feature	Strong
Colour	Gray,Grey
Item Package Quantity	1
Package Information	Cartridge
Item Volume	10.3 Fluid Ounces
Viscosity	Medium to High
Full Cure Time	7 Days
Water Resistance Level	Not Water Resistant
Net Quantity	10.3 Ounce
UPC	022624007630
Number of Pieces	1
Global Trade Identification Number	00022624007630
Manufacturer	Rutland Products
Country of Origin	USA
Model number	63G
Number of Memory Sticks	1
Item Weight	544 g
Product Dimensions	4.76 x 4.76 x 28.58 cm; 544.31 g
Item model number	63G
Item Height	11.25 Inches
Item Width	1.88 Inches
Included Components	10.3-Ounce, Gray - 63G
Are batteries included?	No

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