What are Greases? Greases make up a large part of the lubricant family, and one of our partners, Aeroshell, have provided a useful definition. The range of greases at Sil-Mid cover all conceivable sizes, from a 2oz tube to a 50kg pail. These come with a differing range of enhanced properties including high and low temperature working, strong anti-wear characteristics and radiation resistance. Suppliers in the Sil-Mid grease range include Aeroshell, Nyco and Apiezon.