Impresa 2 Sets of Thermos Stainless King - Compatible 16 Ounce Travel Tumbler/Mug Gaskets/Seals - BPA-/Phthalate-/Latex-Free

You will need a small, thin implement to change the gaskets, such as the rotating portion of a nail file or a flat head screwdriver for glasses repair. You may want to soak the gaskets in hot water for a few minutes to loosen them up and make it easier to seat them. This may not be required only necessary if you are having trouble seating them. Installation Instructions: Remove the lid and place it top down. Rotate the innermost piece on the central rod to the left until it clicks out of place. Place it aside. Remove the gasket that sat underneath that piece and discard it. Remove the flat circular piece to expose the bottom of the lid. Remove the innermost (smallest) gasket that sits around the central rod and discard it Replace the innermost (smallest gasket), using your implement to get it fully seated, if necessary. Remove the outer gasket (largest gasket) and discard it. Replace that outermost gasket, again using your implement to get it seated, if necessary. Place the flat circular piece back over the central rod with the words facing up. Replace the gasket over the central rod, ensuring that it is fully seated.Place the small piece back over the central rod and twist it to the right to click it back into place.