If you are dealing with I-Radiation you should have an RPA in place so ask them

Is that krypton85 (which would be Kr85)? I am not familiar with it.

However, I often have to deal with unknown sources, so I start from a base of:

How big a dose is it delivering?
What sort of radiation is it emitting? (alpha, beta, gamma?)

The answers to those two questions will determine the shielding that is needed, and how they should be handled if they ever need to be handled. For instance to shield beta you need a different approach from shielding gamma.

You don't say what sort of components they are and what information you already have on them. You also don't say what you mean by 'normal' handling of them, so there is very little to go on in your post.

In the original posting you were asking about storage and handling. Without the details, it’s difficult to give a definitive response and you should ensure that you appoint an RPA asap and take their advise. You’ll need a prior risk assessment and local rules which will include emergency action. The RPA will help assess the dose rate which you could be exposed to and will also help include control measures.
You will need to carry out wipe tests on the dials and store cabinets to detect any possible leak of material. I never handled my dials without wearing disposable gloves and I would monitor the gloves for readings before disposing of them. It never occurred but had the gloves become contaminated I would then have been in the realms of radioactive waste and a problem with my dials physically breaking down.

I’m confused that you are referring to Kr85 – this is a gas and not used for painting aircraft dials. These were normally painted with radium; if you are storing these items be aware that one of the daughter products is radon 222 and you need to avoid breathing this in. When I had a few dials in my safe the advice I received from my RPA was to ensure that the room was well ventilated. When opening the safe to carry out the muster (count of items which I did on a weekly basis), I had to open the safe door, and leave the room immediately to allow any potential radon build-up to dilute down and vent to the outside air.
I had a couple of items which had been coated with tritium – these were quite ‘hot’ and it was important that the store contained the emissions. Another one was promethium – quiet a short half life.

In summary – keep them under lock and key and get yourself an RPA.

Scotland1...give me a shout (PM) as one of the sites I have deal with aircraft components with Tritium light devices/sources. I can tell you how the local rules and procedures help.