Refractory Mortar 4.5 lb & 10 lb

Purpose‑built hot face for ceramic wool: Forms a hard, durable coating on ceramic fiber blanket to protect the lining and smooth the chamber surface in forges, kilns, and furnaces. 3200°F working rating: High‑temperature refractory mortar that stands up to forge heat and repeated thermal cycling. Brush‑on, thin‑build application: Tough hot face without the weight of castables. Easy curing schedule: After air‑drying, cure in short, incremental heat cycles to vitrify the lining and reduce cracking.