We've got a Redmond RMC-P350 multicooker with pressure-cooking capabilities. While we're very satisfied so far, one thing that bothers me is that the silicone (?) seal ring on the lid now has the distinct lasting smell of some of the former culinary wonders we've produced, as well as a general yellow-ish tinge, as opposed to its original pristine opaque whiteness.
The instruction manual instructs the user to clean the seal using warm water and soap (not the dishwasher!), which we've done after every use. I've also tried to soak it in baking soda for a bit, to no effect.
Is there anything else I can do to restore the seal to its original state?