Inflatable lid seals have a limited lifespan. Just like the innertube on a bicycle, over time it will wear and eventually go out altogether. Be prepared with a spare.

Our sizing conforms to the variable capacity Minox tanks we offer. If you are looking to purchase seals for a different manufacturer's tanks, the sizes may differ, and for regulatory reasons we are unable to accept returns. Select your sizing carefully before ordering, and if in doubt, purchase replacement lid seals from the same manufacturer that produced your tank.

To find out which size you need, just measure the inside diameter of the tank (not the lid). Select the closest size within a few cm, if possible. They can be stretched, and going smaller is better than going larger.

Approximate Seal Sizes

• 100 Liters: 45 cm
• 200 Liters: 55 cm
• 300 Liters: 61 cm
• 400 Liters: 66 cm
• 500 Liters: 70 cm
• 600 Liters: 77 cm
• 800 Liters: 91 cm
• 1000 Liters: 100 cm

Please note that lid seal sizes are approximate, and may vary slightly. Additionally, sometimes significant stretching (more than you might think is necessary) to get the seal onto the lid. You may need to heat up the seal with hot water to make it more stretchy temporarily before installing.