The Sulzer Mixpac MFH Series static mixers are the Helix Round mixer style designed to be used with the F Series cartridges, both 1:1 and 2:1 ratios. The MFH helix mixer gives excellent mixing in a traditional round element configuration/footprint. If you're concerned about getting a good quality mix, you cannot go wrong with helix mixing nozzles.
The real value of the Sulzer MFH nozzle is the way it connects to the Sulzer F System cartridges through two separate outlets guaranteeing there is no product pollution prior to dispensing. This reduces clogging and extends the adhesive's shelf/storage life.