Highly Insulating Blind Sleeves widely used in foundries where controlled feeding and heat retention are key — without the need for an exothermic reaction.

Key Features:

• Blind (Closed Bottom) Design
  • Prevents molten metal from flowing downward
  • Ideal for side risers or top risers with mold cavity feeding only through the neck.
• Highly Insulating Composition:
  • No heat-generating chemical reaction — relies solely on thermal insulation.
  • Slows heat loss, keeping metal in the riser molten longer for effective feeding.
• Clean and Stable
  • No fumes, no exothermic slag, making it safer and cleaner to use.