JLG Parts O-Ring used on Skytrak Telehandler Machines with the ZF Axle Models MS-T 3055 II and MS-T 3045 II. This o-ring is used to seal the Differential Carrier to the Hub. Model Useage: 10054, 10042, 8042, 6042, and 6036. Please ensure proper Model and Serial Range before parts purchase.