After 22 minutes of play, Kabelo Dlamini connected a cut-in from Patrick Maswanganyi to beat Marumo Gallants goalkeeper Washington Arubi and set Orlando Pirates on the winning path.
After sealing a 1-0 win, the Buccabeers are unbeaten in 14 successive Nedbank Cup games and this will be the third successive Nedbank Cup final Pirates will feature in under coach Jose Riveiro.
In total, the Spaniard will be taking charge of his sixth Cup final as he prepares to leave the Soweto giants at the end of the season.