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Quantity
1
Fits all ThermoFlask® Chug Lids and Spout Lids.
Two BPA free O-Rings are included in the pack.
One large O-Ring fits inside the lid.
The smaller O-Ring fits in the drinking spout cap.
If your lid has a fitting for a straw, check here...
Reviews
4.9
14 ratings
5
4
3
2
1
Not what I needed. Not the fault of ThermoFlask, completely my mistake
Stephanie · September 9, 2025
It's good to have spares on hand. Makes cleaning easier.
A
Andrew · April 8, 2023
I love that this company offers replacement parts! I would hate to have had to buy a new one because I lost the seal. Great products from thermoflask!