The ending sound in "ring" is /ŋ/ (as in sing, long, king).
/ŋ/ is a nasal consonant.
It is voiced (the vocal cords vibrate during its production).
It is produced with the back of the tongue touching the velum (soft palate).
Therefore, /ŋ/ is a:
➡️ Voiced velar nasal
Voiced alveolar nasal – /n/ (as in no)
Voiced uvular nasal – not used in standard English
Voiced labiodental nasal – /ɱ/ (rare in English, found in some dialects or borrowed words)
So, for "ring", the ending sound is voiced velar nasal (/ŋ/).