WECK

Two clips per jar for normal water-bath preserving and everyday sealing — they hold the lid and rubber ring in place while the vacuum forms. For pressure canning, use three. Our standalone jars come with the glass lid only, so you add rings and clips separately; our Complete Sets arrive with the lid, a rubber ring and two clips, ready to use. Clips are sold in packs of 8 if you need spares.

You can reuse them. A WECK ring is good as long as it stays flexible and springs back — if it's stretched, dried out, cracked, or won't grip the lid when you flip it upside down, replace it. A quick test: hold the ring at two points and tug gently while turning; any cracks will show. For the strictest canning safety some people fit a fresh ring each batch, but for storage, fermenting and everyday use they last for years. Rings come in packs of 10.

The rubber tab tells you. After processing, leave the jar 24 hours, then remove the clips and look at the tab on the ring — if it points down, you have a vacuum seal. Confirm it by lifting the jar a coument inch off the bench holding only the glass lid; if the lid holds the weight, it's sealed. If the lid lifts off or the tab points out, refrigerate that jar and use it soon.

The glass jars and glass lids are dishwasher, microwave, oven and freezer safe. The rubber rings, steel clips and plastic covers are not — hand wash those, as dishwasher heat and detergent shorten the life of the rubber and the clips. The one rule for the glass is to avoid sudden temperature jumps (straight from freezer to oven, or hot jar onto a cold stone bench), which can cause thermal shock.

Nothing but glass touches your food — the glass lid means no metal, no coating, no metallic taste, and no BPA. You replace only a cheap rubber ring now and then instead of a whole lid every time, the glass is noticeably thicker so it lasts, and the wide mouth fills and empties easily. The clips also take the guesswork out of "how tight" — there's no finger-tip-tight judgement call like a screw band. And the jars look good enough to go from the canner straight to the table or given as a gift.