If your Oster® blender is leaking, check the following:

• Is the sealing ring over the blade?
• Is the threaded bottom cap on tight enough?
• Is the jar cracked at the bottom?
• Is the threaded bottom cap cracked?
• Is the sealing ring missing?
• Is the sealing ring cracked, broken or rotting?
• Does the item being blended exceed jar capacity?

For replacement parts for an Oster® blender, please contact a local service center.