The USG Fire Stop System with Firecode Compound and safing insulation works exceptionally well with metallic pipe, conduit and electrical cable. The systems also works in combination with intumescent wraps and collars to form an effective Firestop at through-penetrations for materials that can collapse, decompose or disintegrate in fire, such as Schedule 40 plumbing materials made of Acrylonitrile-Butadiene-Styrene (ABS), Polypropylene (PP) or Polyvinyl Chloride (PVC).