Slide them over the end of the probe and seat in notch. You can get
any size o rings from Lowe's hardware in the U.S.

KP wrote:
Hi All
Our club G103 has a muli-probe and when you slide the probe in you
cannot feel the "O"rings, it basically falls in. It must be leaking,
pitot / static / TE?! What is the best way to replace the rings? Were
do I get them?

Ken (KP)