Pack of 10 silicone preserving rings, made of high-quality food-grade silicone, non-toxic, safe and re. .
Size: 9.5 cm x 6.9 cm (outer diameter x inner diameter) thickness 2.2 mm, fits most sizes with diameter opening 9 cm. .
Airtight seal: The sealing ring fits snugly to the tank opening and thus effectively prevents the loss of water and fresh food. .
Use: the old sealing ring to keep your mason jar airtight. .
Multi option: 5 colours, including red, white, orange, grey, green. There is also a mixing option with different colours. .
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