Oring replacement.

[contengo]

How often should I change the orings?
What is the life expectancy of an oring?
I am using Nitrile 90, and Polyurethane 90. Do I replace once a month? once a dive?

www.oringssusa.com says that depends. but depends on what?

 

[Don Burke]

I have tank o-rings that have lasted for years.

I replace them when they leak or I don't like the way they look.

 

[mrducks]

had viton o-ring hold up nicely 4 five years!