TE Connectivity PIDG STRATO-THERM Ring Tongue Wire Crimp Terminals PIDG STRATO-THERM high temperature ring tongue wire crimp terminals consisting of a precision-formed metal wire barrel containing serrations which provide maximum contact and tensile strength after crimping. This barrel is enclosed in a copper sleeve and the whole is encased in a PTFE colour coded insulation sleeve. These PIDG STRATO-THERM ring tongue wire crimp terminals are available with different barrel lengths and diameters to accept various wire sizes.