STERIS Steam and Gas Process Indicator Tapes are available for use in wrapping packs for steam and ethylene oxide. The steam tape can be used at 121 _C (250 _F), 132 _C (270 _F), and 134 _C (273 _F). The ethylene oxide (EO) Indicator Tape has the word GAS printed on it in a red color that changes to green upon exposure to EO. Both tapes surfaces can be written on with indelible ink without smearing or bleeding.