The 120-8551-100 is a black, 3-contact receptacle connector from the Mini SURE-SEAL product line. It is designated with the shell size MSS 3 R. Key dimensions for this shell size include an inner diameter (ØA) of 8,8 mm and an outer diameter (ØB) of 10,4 mm. This component is designed to provide a reliable interconnect solution for applications requiring a compact, 3-pin configuration.