How to Fix a Leak on a Twisted Thermal Mug from Starbucks

Introduction

Use this guide to replace a worn or faulty gasket in your water bottle.

The gasket (also called an O-ring) is a ring-shaped piece of silicone that sits inside the lid and helps seal the connection between the lid and the bottle, filling in tiny gaps where water or air could escape. Over time, gaskets can wear down, become loose, or crack—causing the bottle to leak from the lid.

This guide features a Starbucks Twisted Thermal Bottle with a 3-inch diameter gasket, but the same steps can be applied to any leaking water bottle with a similar gasket design.

What you need

Step 1 Silicone Gasket

How to Fix a Leak on a Twisted Thermal Mug from Starbucks, Silicone Gasket: step 1, image 1 of 3

How to Fix a Leak on a Twisted Thermal Mug from Starbucks, Silicone Gasket: step 1, image 2 of 3

How to Fix a Leak on a Twisted Thermal Mug from Starbucks, Silicone Gasket: step 1, image 3 of 3

Fill the bottle with water and secure the lid.
Tilt, shake, or turn it upside down to pinpoint the source of the leak—whether it’s from the lid, spout, or base.

Edit

Step 2

Open the bottle and examine the rubber gasket or O-ring inside the lid.
Look for cracks, deformation, brittleness, or signs of wear.

Edit

Step 3

Take apart all removable components—cap, straw, inner seals.
Ensure everything is cleaned and inspected.

Edit

Step 4

Measure the rubber part’s inner and outer diameter, and its thickness.
This helps in finding the correct replacement.

Edit

Step 5

How to Fix a Leak on a Twisted Thermal Mug from Starbucks: step 5, image 3 of 3

Carefully insert the new O-ring, ensuring it fits snugly into its groove.
Avoid overstretching or misaligning the new seal.

Edit

Step 6

How to Fix a Leak on a Twisted Thermal Mug from Starbucks: step 6, image 3 of 3

Wash all components with mild soap and warm water.
Use a soft brush or cotton swab to clean hard-to-reach areas.
Rinse and let everything dry completely.

Edit

Step 7

Put the bottle back together and fill it again to test.
Shake or turn it upside down to confirm the seal is holding and the leak is gone.

Edit

Conclusion

We hope this simple and practical guide helps people to give new life to their water bottles. This guide focuses on making this repair easy, accessible, and affordable with tools available at home. We believe that this repair is a great way to keep your bottle in use, and out of landfills for years to come. Thank you for reading our guide, happy fixing!

3 other people completed this guide.