Symptoms
- Liquid dripping from under the jar during or after blending
- Food residue building up around the blade assembly
- Leak worse with thin liquids than thick ones
- Jar seems loose on the blade unit
Likely causes
- CommonWorn or missing blade assembly gasketThis rubber ring seals the blade unit to the jar and hardens or tears with age and dishwasher heat.
- CommonBlade assembly not tightened fullyIf the retaining ring under the jar isn't screwed on tight, liquid can seep through the threads.
- PossibleCracked jar near the baseImpact or years of use can crack the plastic or glass near the bottom.
- PossibleOverfilled jarBlending too much liquid at once can force it up and over the blade assembly seal.
- Less commonDamaged blade assembly threadsCross-threading during reassembly can prevent a proper seal.
What to do
- Empty the jar and disassemble the blade unit from the bottom, noting how the gasket, blade, and retaining ring fit together.
- Inspect the rubber gasket for cracks, flattening, or tears; replace it if it looks worn.
- Clean any food residue from the threads on both the jar and retaining ring.
- Reassemble, making sure the gasket is seated evenly and the retaining ring is screwed on fully and evenly, not cross-threaded.
- Test with plain water first before blending food to confirm the leak is fixed.
- If leaking continues with a new gasket properly seated, the jar itself may be cracked and should be replaced.
Tools and parts
Blender blade assembly gasket/sealSearch: “blender base gasket replacement”
Replacement blender jarSearch: “blender jar replacement”
When to call a pro
This is a straightforward DIY fix; a professional isn't needed since replacement parts are inexpensive and easy to install.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.