Effective sealing for cheap

SEB recommends replacing the gasket every year ... it is perhaps a little excessive because it is mainly based on the use you made of your pressure cooker will make you a light small leak to mean that the gasket is tired and it's time to change it.
For my case: 3 years, 1 use every 15 days / 3 weeks, a little less in winter when I make fresh soups.

Now for the price of this seal that claims just a helping cuter to perfectly fit your model, you can change every year if it reassures you, you take no risk other than losing some pressure, that's all.

SMALL TIP: If you do not know when was the last change, keep the packaging and sign above date, you will see that this joint takes more than a year ....