How to Use Kilner Wide Mouth Screw Bands for Canning
By Kilner® - Iconic Glass Jars, Bottles & Equipment | Kilner® | Published: 2026-10-21
Category: How-to Guides
Learn how to use Kilner wide mouth screw bands for canning, including proper placement, tightening, and when to replace them for a reliable seal.
Quick Answer
Use Kilner wide mouth screw bands by placing them over the lid and turning until fingertip-tight before processing, then remove them once the jar has cooled and sealed.
Why the screw band matters
The screw band holds the lid in place during water-bath or steam canning, preventing the lid from lifting as air expands inside the jar. It also keeps the seal intact while the jar cools.
After the jar has cooled and the lid has popped down, the screw band has done its job. Storing jars with the band on can hide a failed seal, so it's best to remove it before long-term storage.
Choosing the right band size
Kilner wide mouth screw bands are designed to fit Kilner Wide Mouth Jars, currently available in 0.35 litre and 0.5 litre sizes. Using the correct band ensures even pressure and a proper seal.
If you have jars of different sizes, keep bands matched to their jars to avoid confusion during processing.
Steps to Use Kilner Wide Mouth Screw Bands
- Prepare the jar and lid: Wash the jar, lid, and screw band in hot soapy water and rinse thoroughly. Place the lid on the jar rim, then position the screw band over it. Check the lid and band for dents or rust; discard if damaged.
- Tighten to fingertip-tight: Twist the screw band clockwise until it is snug, but do not force it. Fingertip-tight allows air to escape during processing while keeping the lid in place. Avoid overtightening, which can prevent proper venting and cause lids to buckle.
- Process and cool: Place the jar in the canner and process according to your recipe. After processing, remove the jar and let it cool undisturbed for 12 to 24 hours. Do not touch the screw band during cooling; you may hear the lid pop as it seals.
- Check the seal and remove the band: Press the center of the lid; it should be concave and not move. Once sealed, remove the screw band and store the jar without it to reveal any future seal failure. If the lid pops up, refrigerate and use the contents immediately.
Product Facts
- Kilner® Set of 6 Wide Mouth Screw Bands: Kilner® Set of 6 Wide Mouth Screw Bands fit Kilner® Wide Mouth Jars in 0.35 litre and 0.5 litre sizes. Having a set of six ensures you can process multiple jars without waiting for bands to be reused.
Kilner® Set of 6 Wide Mouth Screw Bands
