O rings are generally made out of high-quality silicone material. They are elastic and can be used with a wide rage of vaping devices. They can often be found as extras in vape kits or along with your device, but some rings can also be purchased separately. You will find a great selection of rings in vape stores and online, they can be different colours and can help you personalise your device, and improve its appearance. Sometimes they are called protection rings, as they prevent any possible leakage, and absorb electrical shocks.

O rings can very easily be replaced when you unscrew the tank off your device, or when you replace the coil.