Mechanical Seal for Nitric Acid

[kamaqal]

Hello Dear members
I want your guidance in selecting mechanical seal. Which mechanical seal is best for handling Nitric Acid? Viton or EPR. if there is any reference
available.
Thank you

 

[johncaboth]

Ring M1 Burgmann

 

[Chpal1984]

This is always a good source for these queries

https://www.parker.com/literature/ORD 5700 Parker_O-Ring_Handbook.pdf

In this case it depends on the concentration of Nitric acid. If its between 0-50%, then you can use viton. Otherwise your looking at perfluoroelastomers I'm afraid.