O RING; APPLICATION: MECHANISM ASSEMBLY, METERING PUMP, SBS DOSING PUMP; MANUFACTURER PART NO: 4342480, EQUIPMENT MANUFACTURER: SEKO BONO EXACTA, EQUIPMENT MODEL NO: SWM1 28STTA, EQUIPMENT SERIAL NO: 040662/3, EQUIPMENT TAG NO: ME-6592-P1A, ME-6592-P1B; DRAWING: V-215A-301-A-212-08, POSITION NUMBER: 18