1 x 850ml Weck Tapered Canning Jar Complete (743)

850ml / 3/4 litre Weck Preserving round tapered jar. Takes Large lid and seal.

Jar comes complete with glass lid, natural rubber seal and 2 stainless steel clips. Note that the jars may be supplied with Rex branded lids (identical lids made in the Weck factory but with different branding on top).

Weck reusable Glass Jars are of the highest quality and contain NO BPA (Bisphenol A).

These jars are suitable for water bath, and pressure canning. With the added bonus of being able to freeze and bake.

The 850ml size jars are extremely popular in particular for preserving stone fruit, apples and pears. They are also an ideal size for pressure canned meals.

The most versatile and beautiful preserving jar available today.

Weck canning jars are made with thick glass to withstand boiling, sterilizing and processing over and over again. Glass lids preclude issues with rusting, and the tab on the replaceable rubber ring, when facing downwards, indicates clearly that the seal on the jar is intact.

The point of canning is to hermetically seal the outside world from the sterilized interior of the jar, preventing the food inside from spoiling. These jars are designed to make it easy to tell whether or not this all-important seal has been made.

Boiling the filled jars (also referred to as ‘processing’) and the cooling period directly afterwards, creates a vacuum seal tight enough to keep invisible microbes from entering the jar. The strength of this seal alone is also what keeps the glass lids in place. After the jars have fully cooled, the stainless steel clamps are removed and you can check if the jars have sealed by lifting the lid. If it doesn’t come off, you know for sure the jar is sealed. If the jar didn’t seal properly, you can either re-process it or refrigerate the jar and eat the contents within a couple of days.

All jars have wide openings for tidy, easy filling.

Replacement rings, lids and clamps are also available.