In container, flat, specialty and insulation glass furnaces the zones that face direct contact with molten glass and flumes, such as the superstructure, bottom, and sidewalls are constantly under attack. High temperatures, chemical corrosion, and glass infiltration gradually weaken refractory linings, creating defects that can compromise both furnace integrity and glass quality.
Faster, safer maintenance for every shutdown
When a cold shutdown becomes necessary, time and precision are critical. Even minor damage, small cracks, localized corrosion, or cavities can lead to contamination and higher energy losses if left untreated.
With Repair Cast In Place AZS, glassmakers can respond quickly. This pumpable, electro fused AZS grain castable flows easily into intricate shapes, bonds firmly with existing AZS blocks to create a homogeneous, corrosion-resistant surface.
Its ready-to-ship availability ensures rapid delivery and minimal downtime, helping plants return to full operation faster.
Precision that preserves your furnace
Unlike traditional repair methods requiring the removal of worn refractories, Repair Cast In Place AZS enables targeted, waste-free restoration.
Combined with SEFPRO’s 3D scan technology, maintenance teams can accurately assess the damaged volume, plan interventions precisely, and optimize material usage.
During heat-up, the product’s controlled sintering behavior ensures a gradual temperature rise and stable bonding, protecting both the repaired zones and the overall furnace structure.
Durability built into every layer
At the heart of Repair Cast In Place AZS is a pure electro fused AZS grain matrix, engineered for exceptional corrosion resistance and strong adhesion to existing linings. Its optimized viscosity and sintering properties produce dense, homogeneous repair layers that restore protection in glass-contact areas, superstructures, and sidewalls alike.
These attributes make it an ideal solution for cold or hot repairs in furnaces operating under high thermal stress, and lasting performance for extended furnace lifespan.
SEFPRO CARE®: your partner in reliable furnace repair
Whether facing an emergency intervention or planning preventive maintenance, Repair Cast In Place AZS offers a dependable way to extend furnace lifetime and protect glass quality.
Backed by the expertise of SEFPRO CARE® teams, every repair is supported on-site to guarantee proper application, safe heat-up, and optimal long-term results.
Together, we keep your glass furnace performing at its best: efficiently, reliably, and sustainably.