Imperial Mfg Group Usa Inc KK0306 Stove Fireplace Mortar

Product Description

The IMPERIAL MFG GROUP USA INC KK0306 is a black, high-temperature stove and fireplace mortar formulated for sealing firebox and venting joints on gas, pellet, corn, and wood stoves. Supplied in a 10.3 oz cartridge, it resists temperatures up to 2000 degrees F and cures by air exposure — no oven cure cycle required. Once dry, the surface accepts paint, making it suitable for finish work where aesthetics matter. HVAC service techs and hearth installers use this product during direct vent appliance installations and repairs where a durable, heat-resistant seal is required at flue and venting connections.

This mortar is appropriate for residential and light commercial hearth applications involving direct vent gas stoves, pellet stoves, corn stoves, and wood-burning stoves. It is applied at firebox seams and venting joints where conventional caulks or sealants would fail under sustained high heat. The cartridge format fits standard caulking guns, allowing controlled bead application in tight joint locations common in stove and insert installations.

Key Features

• Resists continuous temperatures up to 2000 degrees F
• Air-cure formula — no heat activation required for initial set
• Paintable surface once fully dry
• Black color blends with stove and venting components
• 10.3 oz cartridge fits standard caulking guns
• Suitable for gas, pellet, corn, and wood stove applications

Compatibility

Designed for use on the firebox and venting joints of gas, pellet, corn, and wood stoves requiring a high-temperature, direct vent mortar seal.

Installation Notes

Installation of stove and fireplace mortar should be performed by a qualified hearth or HVAC technician in accordance with the appliance manufacturer instructions and applicable local codes. Shut down and fully cool the appliance before applying mortar to any joint or seam. Allow adequate air-cure time before returning the stove to service. Do not fire the appliance until the mortar has reached a firm set per product instructions.