Technical Data Sheet Product Range for Helmets Phenolic Systems - (Shelf life 12 months at -18°C or 6 weeks at 23°C) Resin content Prepreg Weight Style 101 PHHGM - single side coated Style 258 PHHGM - double side coated Style 350 PHUS - single side coated Style 3651 PHUSD Black finished double side coated Style 258 PHHGM - single side coated Curing Cycle Epoxy Systems - (Shelf life 12 months at -18°C or 45 days at 23°C) Item Resin content Prepreg Weight Curing Cycle Thermoplastic Systems - (Shelf life 12 months at 23°C) Item Resin content Prepreg Weight Curing Cycle Product Range for Helmets - technical data