The purpose of a capping head is to hold pre-made caps as they are applied to plastic or glass threaded rigid containers, throughout the food, beverage, chemical and pharmaceutical industries.  A capping head mechanically grips the cap and applies it to the bottle.

Sigma Machine supplies both custom and standard aftermarket capper parts for the machines manufactured by the following companies: Fowler/Zalkin, US Bottlers, Alcoa and Alsim (mechanical and one-piece), Federal, H & H, Linker, and Krohns.