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BOSS® 139 Fire Mortar

  • A non-combustible silicate cement that can withstand extremely high heat. It is formulated for repairing chimneys fireplaces, and sealing wood-burning stoves and appliances. This product has excellent adhesion and sets to become rock hard when cured.
  • BOSSŪ 139 conforms to ASTM E-136 and can withstand temperatures of up to 1400°F. This sealant can be used on wood frame construction where a non-combustible sealant is required. Applications include sealing around pipes, ducts, vents, and chimneys at ceiling and floor level before drywall is applied.
  • BOSSŪ 139 is available in 10.1 Fl. Oz. cartridges.
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350 Ring Road Elizabethtown, KY 42701 Phone: 800-928-2677 Fax: 270-765-2412

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