You say it broke relatively recently, so likely only one thing has failed. That seems to be the o-ring. As others have said, that is easily replaceable.
But ...
I think you haven't included all the parts in the photo. Or is that just it?
What is the status of the funnel where you place the ground coffee?
Also, how does the side safety valve look like? It should be on the side of the bottom compartment. The moka works with vapour pressure. A good valve is needed.
As others said, NO dishwasher. And I would also avoid much scrubbing. The moka is made out of aluminum which is a soft metal, easily damaged by acids, and with harsh scrubbing.
This does not sound like somebody interested in promoting peace.