Replacement Wide Mouth Mason Jar Silicon Seals and O-Rings (Pack of 4)
$4.95
Keep your beverages fresh with these extra FDA grade seals for Stroba™. Comes in pack of 4. Also comes with 4 FDA grade O-rings as well. Just in case you need extras.
The seal slides onto the lower straw and the O-ring gets placed on the groove in the rotating middle lid.
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