CO2 Cylinder Seals for Sodastream DUO Terra ART Soda Machine Replacement Gaskets 5 Pcs Product size: 3cm (outer diameter) x 2cm (inner diameter) x 1cm (height) This CO2 cylinder gasket is designed for pink soda refill bottles, compatible with DUO Terra Art models O-ring gasket helps connect devices and adapters to the soda refill hose and allows easy replacement of soda cylinders Good sealing performance: O-ring reliably prevents air leakage, handle closure issues, and slow gas release when connected Sealing ring is made of high-quality silicone rubber material, offering stable and reliable performance, no deformation, long service life Direct replacement: O-ring serves as an upgraded accessory, perfectly fits pink soda canisters; no special tools required, simple installation Color: Yellow Material: Silicone Rubber Package Contents: 5 x Soda machine seals Only the above package content is included; other items are not part of this product Note: Light reflection and different displays may cause slight color variations between the image and actual item. Measurement error allowance is +/- 1-3cm.