Kilner Glass Preserve Jars with Clip Tops

Yes, Kilner clip-top jars are designed for preserving and can withstand the heat required for water bath canning. Always ensure you are using a new rubber seal for each canning session to maintain a proper vacuum seal.

The glass jars themselves are dishwasher safe. However, the metal clips and rubber seals should be hand-washed and dried immediately to prevent rust and degradation of the rubber.

If you are using the jars for long-term food preservation, you should replace the rubber seal every time to ensure an airtight, sterile environment. For dry pantry storage, the seals can be reused multiple times.

While the glass is durable, it is not tempered for extreme temperature fluctuations. It is best to avoid putting these jars directly in the freezer, as the expansion of frozen contents can cause the glass to crack.

Once the jar has cooled after processing, the lid should be firmly held in place by the clip. If you can lift the lid without releasing the clip, the seal has not formed correctly and the contents are not preserved.