Reduce. Reuse. Repair… Our Maintenance Kits are designed to do just that. Our kits include o-rings and gaskets -- a no-fuss fix that extends the life of your bottle so it’s running as long as you are. Kit includes two replacement o-rings for Wide caps. NOTE: Kit and gaskets do NOT work on TKWide internal thread caps.

Works for all Wide caps: Café Cap 1.0, Wide Loop Cap, Flip D-Ring Cap (NOTE: Does not work with Café Cap 2.0)
Wide Opening Diameter: 2.125" (54 mm)