Weck Rubber Ring Seals are required for all jars when used for home canning or for providing an airtight seal for food storage

The rubber rings are available in 5 sizes:

• Extra small (XS) - all jars with Rundrand Glas 40 on the lid
• Small (S) - all jars with Rundrand Glas 60 on the lid
• Medium (M) - all jars with Rundrand Glas 80 on the lid
• Large (L) - all jars with Rundrand Glas 100 on the lid
• Extra large (XL) - all jars with Rundrand Glas 120 on the lid

Refer to the number next to the product name to work out what size you need, e.g., (S) means you need the small seal.

Approximate rubber ring dimensions (inner diameter / outer diameter):

• Extra small (XS) - 38/51
• Small (S) - 53/68
• Medium (M) - 71/88
• Large (L) - 92/108
• Extra large (XL) - 108/128