Highly Insulating Open Sleeves – Cylindrical which are key components in feeding systems for ferrous metal castings where extended insulation is more critical than exothermic reaction.

Key Features:

• Open Top Design
  • Allows molten metal to be poured directly into the sleeve.
  • Typically used as top risers in vertical or horizontal mold layouts.
• Cylindrical Shape:
  • Ensures even directional feeding and is easy to install into the mold
  • Commonly used for uniform section castings
• Highly Insulating Material:
  • Designed to minimize heat loss from the riser to the environment
  • No chemical exothermic reaction — instead, it acts like a thermal blanket.
  • Keeps riser metal liquid longer through thermal retention, not heat generation.