Rubber Round-Button (C-Style) Sprue Base, 3-1/2″ Diameter

The Rubber Round-Button (C-Style) Sprue Base, 3-1/2″ Diameter, provides a leak-proof foundation for centrifugal casting and vacuum lost wax casting workflows. Crafted from natural rubber, it delivers reliable seals and durable performance for repeated pours.

Designed to fit both regular and perforated flasks, this sprue base securely holds the tree in place (5/16″ – 3/8″ diameter tree) and resists deformation under heat and pressure. Its versatile 3-1/2″ size makes it compatible with a wide range of crucibles and investment casting setups.

• Leak-proof seal ensures clean pours and reduces contamination.
• Universal fit accommodates regular and perforated flasks.
• Heat-resistant natural rubber for repeated use in high-temperature casting.
• Sturdy 3-1/2″ diameter base accommodates 5/16″ 3/8″ trees securely.
• Ideal for centrifugal casting and vacuum lost wax casting processes.

Enhance your metalworking setup with this reliable sprue baseorder today and streamline your workflow with confidence.