Below is a list of Grease Cartridges manufacturers from Toronto, Ontario. Grease cartridges are a type of cardboard tube that serve as components in grease guns. Similarly to caulking tubes, grease cartridges are used to provide lubrication to moving parts in machinery. Grease guns are either hand triggered, pneumatic or battery powered, all of which use cartridges filled with grease. They are made out of metal, plastic, or most commonly, cardboard material.