Re: 305098 Quad O-ring Home › Forum › Ask A Member › 305098 Quad O-ring › Re: 305098 Quad O-ring billwUS Member - 2 YearsReplies: 2071Topics: 66 July 13, 2018 at 9:29 am #79474 The OMC number doesn’t help me any until I know where it was supposed to be used….OMC’s use of a quad ring anywhere is not coming to my mind. Help me out here…. Long live American manufacturing!