ERC Waterstop Collet

ERC waterstop collets are flexible collets that achieve a "waterstop" function through a special groove design and sealing ring. They can release water from the center of the tool or along the tool shank diameter.

They are used to provide coolant during machining to improve heat dissipation and chip evacuation, and are often used with water-discharging tools.

Models available are ER-11, ER-16, ER-20, ER-25, ER-32, and ER-40.

Runout accuracy is 0.005 for HP grade and 0.008 for AA grade.