JLG Parts O-Ring for use on Skytrak Telehandler(Rough Terrain Forklift) Machines. This O-Ring sits behind the Axle Mounting Brackets and creates a seal with the Axle Center Drive Housing. Model Use 4266, 4270, 4290, 6036, 6042, EIRV, MMV. Please ensure proper model and serial range before parts purchase.