Parker Hannifin’s Seal Group, of Irvine, Calif., released a new technical bulletin, “Polon® PTFE Rotary FlexiCase™ Seals” (EPS 5303), that describes the physical properties and performance features of its rotary shaft seals. The bulletin includes information about the seals, which consist of an outer metal case with an available series of internal metal, PTFE and rubber components. Seals are used for light-duty rotary oil sealing and dust exclusion applications as well as other applications.