plants: asked about materials seals

[-Mc-]

Hello, everyone! I am faced with the design of a relatively simple plant in the food sector: basically a large tank inside which rotates a basket. . .

My doubt is as follows:
I need to use barco (mechanical sealing rings) and various seals (plane and oring);
that you know there are specific materials for this type of application since everything will go in contact with a "middle" "to eat" to avoid any harmful or even poisonous "intrusions"?
exist specific seals? Where are they going?

Thank you very much.

 

[MFT]

Hi.
gaskets you can see

Saint-gobain
Trelleborg
♪
Busak
polypac

 

[stevie]

definitely the reference material is the ptfe.
Ask for approved seals fda.

 

[-Mc-]

Thank you so much!!