Tegopren® 5851 is a 100% active defoamer based on organomodified siloxanes. Tegopren 5851 can be used for formulating stable, low foaming, neat metalworking fluids. It can also be used in other lubricating oils such as transmission fluids and industrial fluids. This product also has no adverse effect on finishing process of treated parts and no negative impacts on air release properties of lubricating oils. Tegopren 5851 can either be blended directly into the oil or used as part of an additive package.