Sipcupmate Reusable Rubber Gaskets for Thermoflask Thermos 24/32/40/64oz Tumbler Lid, 8 Pack Premium Silicone Seal O-Ring Replacement Parts, BPA-Free

["【Package Contents】You will receive 8 sealing gaskets and 1 screwdriver. This ample supply ensures long-lasting, reliable sealing for your favorite water bottle.","【Compatibility】Sipcupmate cup cover insert replacement is designed only for Thermoflask Thermos 24/32/40/64oz tumbler, precisely fitting the engineered lid groove for a secure, snug seal. Please verify your bottle model before purchase.","【Quality Material】Water bottle rubber seal O-ring parts made of premium, BPA-free silicone. Dishwasher-safe for easy care. Sturdy and highly durable for long-term reliability.","【Easy to Install】Just use the included screwdriver to remove your old gasket and replace it with a new one. Refresh your lid instantly with a quick and easy upgrade.","【Leak-Proof Design】Eliminates lid leaks completely. Easily replaces old, dirty or worn-out gaskets—saving you the cost of a brand new water bottle."]