Silicone Packing Seals for Tugo Bottles: Care and Replacement

Quick answer

If your Tugo bottle is leaking, the first thing to check is the silicone packing gasket inside the lid. Remove it, inspect for cracks, stretching, or food residue, then wash and dry it thoroughly. If the gasket is deformed or damaged, replace it with the KINTO TO GO BOTTLE silicone gasket 2-pack (product ID 1954827), which fits both 360ml and 480ml models. This simple part is usually the cause of drips and the easiest fix.

How to diagnose a leaking Tugo bottle

Before ordering a replacement, confirm the leak is coming from the lid seal and not from a loose cap or a cracked bottle body. Fill the bottle with water, screw the lid on firmly, and turn it upside down over a sink. If water seeps from the rim of the lid, the silicone packing is the likely culprit. If water drips from the bottom or side of the bottle, the issue is structural and a new gasket will not help.

• Leak at the lid rim: gasket problem.
• Leak at the bottle base or side: possible crack, stop using the bottle.
• Leak only when tilted: gasket may be misaligned or worn.

When and how to replace the silicone packing

The silicone gasket in the TO GO BOTTLE lid can wear out over time, especially with frequent washing or exposure to high heat. If you see visible cracks, a stretched shape, or if the gasket no longer sits snugly in its groove, replacement is the reliable fix. The KINTO TO GO BOTTLE silicone gasket 2-pack includes two gaskets, each measuring approximately φ70 x H10 mm and weighing about 4 grams, made of silicone rubber. To replace: pull out the old gasket, clean the groove, press the new gasket evenly into place, and test with water before use.

Daily care that extends gasket life

Silicone gaskets last longer when they are cleaned regularly and dried completely. After each use, remove the gasket from the lid, wash it with mild soap and warm water, and let it air dry away from direct sunlight. Avoid harsh cleansers, abrasive sponges, and leaving the gasket soaking in strong detergents. For the bottle body and lid of the 300ml Water Bottle (product ID 1954816), the manufacturer specifies a heat resistance of 80°C for the PCT resin and 100°C for the silicone gasket, and the gasket is dishwasher safe. However, the bottle itself is not microwave safe. Always place the gasket loosely in the dishwasher to avoid deformation.

When to stop and consider a different bottle

If you have replaced the gasket correctly and the bottle still leaks, the lid or bottle body may be damaged. In that case, replacing the entire bottle is safer than continuing to use a compromised one. Also, if you need a bottle for hot beverages, note that the 300ml Water Bottle has a maximum heat resistance of 80°C for the container, so it is not suitable for boiling liquids. For children, the PLAY TUMBLER 300ml with straws (product ID 1954514) is a lightweight alternative designed for small hands.

Leak diagnosis checklist

• Symptom: Water drips from the lid rim when the bottle is tilted or shaken.: Likely cause: The silicone gasket is worn, cracked, or not seated properly. Remove and inspect the gasket. If damaged, replace with the 2-pack silicone gasket set.
• Symptom: The gasket looks fine but the bottle still leaks.: Likely cause: The gasket may be stretched or the lid groove may have residue preventing a seal. Clean the groove and gasket with mild soap, dry completely, and reseat. If the leak persists, replace the gasket.
• Symptom: Leak continues after replacing the gasket.: Likely cause: The lid or bottle body may be cracked or warped. Stop using the bottle and consider replacing it. For hot drinks, choose a bottle with a higher heat resistance.

Product facts

• トゥーゴーボトル 360ml / 480ml シリコーンパッキン 2個入り: Pack of 2 silicone gaskets for TO GO BOTTLE 360ml and 480ml; dimensions φ70 x H10 mm (approx.); weight about 4 g per gasket; material: silicone rubber; country of origin: China. This set provides an exact replacement for worn gaskets, restoring a proper seal and stopping leaks. Two gaskets mean you have a spare or can replace both bottles at once.
• ウォーターボトル 300ml: Water Bottle 300ml: dimensions φ65 x H155 mm; capacity 300 ml; weight about 60 g; body height without lid H128 mm; material PCT resin; heat resistance 80°C; contains at least 50% certified recycled material; silicone gasket heat resistance 100°C; dishwasher safe; BPA-free. Knowing the heat limits helps you avoid deforming the bottle or gasket. The dishwasher-safe gasket simplifies cleaning, but the bottle itself should not be microwaved.
• プレイタンブラー 300ml ストロー 2本入り: PLAY TUMBLER 300ml straw set: capacity 300 ml; dimensions φ7 × H125 mm; weight approximately 2 g; material: safe polyethylene; includes two reusable straws. A lightweight and child-friendly option if you need a spill-resistant cup for kids or a simple straw tumbler for everyday use.