TE Connectivity TERMINYL Crimp Ring Terminals TERMINYL crimp ring terminals designed for use with larger wire sizes from 8 AWG to 4/0 AWG. These TERMINYL ring terminals are made from high grade conductivity copper per ASTM B-152 and tin plated per ATSM B-545 and are designed to withstand extreme vibration, shock and high temperatures. the funnel entry, colour-coded moulded nylon insulation of these TERMINYL wire connectors enables wires to be inserted easily and acts as an insulation support.