Weck's red natural-rubber rings seal the gap between jar and glass lid, holding an airtight seal through water-bath preserving. Sized for 80mm round-rimmed openings and supplied in a pack of ten, they pair with two clamps per jar to lock the lid during processing.
- Natural rubber for a reliable airtight seal
- Fits all Weck 80mm round-rimmed jars
- Used with two clamps per jar for water-bath preserving
- Made in Germany
- Ten rings per pack
Boil for five minutes in water with a splash of vinegar before first use. Store dry, away from heat and UV light, at 15-25°C. Single use per preserving cycle. Suitable for round-rimmed jars only (not older flat-rimmed or grooved jars).
Contents: 10 x rubber washers.