High-performance lubricants for injection pistons – plungers used in casting machines, in high pressure die casting. Range of high-performance lubricants for injection pistons – plungers used in casting machines, in high pressure die casting. SPEL has developed a complete range of high-performance lubricants for injection pistons. Used on casting machines in pressure die casting, our lubricants give optimum results for the melting of all types of metal: alloys of aluminium, magnesium and zinc. To adapt to all types of machine and hence all types of cylinder and piston, we offer a large range of products based on mineral, synthetic or vegetable oils. With or without graphite, these lubricants offer anti-wear properties for greasing pistons. The wide range of viscosities of our oils allow us to adapt our offer to your machines and your needs.