Sulzer Mixpac cartridges are made from PolyPropylene (PP) or PA6 (Nylon) to suit the application. The images above show the standard ratios of 1:1, 2:1, 4:1 ands 10:1. Above you can see the configuration for the System 50 and 75, which use either cap with plugs, or cap with gaskets. System 200 and 400 cartridges are of similar desigjn, but use screwed retaining nuts and nose plugs.