Is Ball Canning Jar dishwasher safe?
Sometimes — the glass jar body is dishwasher safe, but the metal lid and rubber seal should be hand washed to prevent rust and seal degradation.
Quick facts
| Dishwasher safe? | Sometimes — Sometimes — with care |
|---|---|
| Category | Containers |
| Source | AI-reviewed · manufacturer guidance & material science |
| Last checked | 2026-07-28 |
Why
Ball canning jars are made of soda-lime glass, which is generally dishwasher safe because it can withstand high heat and alkaline detergents without warping or clouding. However, the two-piece metal lid (band and flat disc) is prone to rust and corrosion in the dishwasher's moist, alkaline environment, especially if the coating is scratched. The rubber sealing compound on the flat lid can degrade over time, losing its ability to form an airtight seal. Ball's official care instructions recommend hand washing lids and bands, while the glass jar can go on the top rack. Repeated dishwasher cycles may cause the glass to become cloudy (etching) from hard water minerals, but this is cosmetic and does not affect function. The primary failure mode for lids is rust and seal failure, leading to improper sealing during canning.
How do you wash Ball Canning Jar?
- Remove the metal band and flat lid from the jar.
- Hand wash the metal band and flat lid in warm, soapy water using a soft sponge; rinse thoroughly.
- Place the glass jar on the top rack of the dishwasher, away from the heating element.
- Use a gentle cycle with low heat and no heated dry to minimize thermal shock.
- After washing, air dry the glass jar completely before storing.
- Dry the metal parts immediately with a soft cloth to prevent rust.
- Inspect the rubber seal on the flat lid for any cracks or wear before reuse.
What happens if you put Ball Canning Jar in the dishwasher?
If you put the entire Ball canning jar (including metal lid) in the dishwasher, after one wash you may notice minor water spots on the glass, but the lid might show early signs of rust on the band's edges or the flat lid's underside. After repeated washes, the metal band will develop visible rust, especially around the screw threads, and the rubber seal on the flat lid may become brittle or cracked, compromising its ability to create an airtight vacuum during canning. The glass jar itself may become cloudy from mineral etching, but this is purely cosmetic and does not affect its structural integrity. The functional damage is primarily to the lid: rust can cause the band to stick or fail to tighten properly, and a degraded seal means the jar cannot be safely used for home canning. For non-canning uses like storage, the rust may contaminate contents.
Frequently asked questions
- Can Ball canning jars be used in the microwave?
- Yes, Ball glass jars are microwave-safe for reheating, but remove the metal lid first. Do not microwave empty jars or subject them to sudden temperature changes.
- What water temperature can Ball canning jars withstand?
- Ball glass jars can withstand boiling water (212°F / 100°C) used in water bath canning, but avoid extreme thermal shock, such as placing a hot jar on a cold surface.
- How often should I replace the flat lid?
- Ball recommends using a new flat lid for each canning session to ensure a proper seal. For non-canning storage, replace if the seal shows cracks or wear.
- Can I freeze food in Ball canning jars?
- Yes, Ball wide-mouth jars are freezer-safe. Leave at least 1 inch of headspace for expansion, and avoid overfilling. Narrow-mouth jars are not recommended for freezing.
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Last updated 2026-07-28. General guidance — always check your product’s care label. How we verify · Dishwasher care guides.