O RING; NOMINAL SIZE: ID 380.59 X THK 3.53 MM, MATERIAL: FPM, APPLICATION: GEARBOX REDUCTION STAGES; PN:715500281; MODEL:3 13 L 3 176 HZ SF C0AA T, MFR:BONFIGLIOLI, REF:2T313L31760018, S/N:1422681800/2, MANUF DRAWING: 1.3563827A, POS:2, GEARBOX RATIO: 176