White Mountain Process is a supplier of mixing impellers and stirring propellers. We offer standard laboratory Teflon mixing impellers, and custom fabricated production Teflon impellers and Teflon mixer shaft assemblies. We can offer Teflon coating impellers (stainless shaft and impeller with Teflon or PFA coatings) or solid Teflon mixing impeller and solid Teflon sleeved shaft.