O rings for SRAM rival brake hose banjo

A colleague has bought a set of Sram rival shifters and hydro calipers. They have come from Germany so are left front/right rear.
It seems a simple job to swap the hoses at the brake lever end, but there is a banjo with an o ring at each side in each master cylinder.
Can these be reused in a simple swap? If not can you just get the o rings by themselves?
Thanks
Ian

I’ve never had a problem with them. Providing you’re careful not pinch them, you should be fine, but these are one of the few brakes i’d prefer to swap at the caliper end (unless they’ve changed the design, and the banjo’s no longer inside the vertical reservoir. It’s a messy business).

double post.
Bl**dy website.