Magnetic Couplings for Vacuum Distillation are designed to suit all kinds of laboratory stirring applications where maintaining full vacuum or inside pressure in the glass flask is absolutely necessary. The Magnetic Couplings are designed for laboratory glass flasks and one end of the coupling snuggly fits on the nozzle of a glass flask while the other end can be coupled to stirrer motor. The Magnetic Couplings have a glass shaft with PTFE impeller that can be fitted on the bottom side. The Magnetic Couplings for Vacuum Distillation can fit various glass nozzle types and couplings can easily handle torques of various DC motors to stir the mass up to 200 litre capacity.