What can I do about my leaking sink?

[Wayne Lippman]

I came home today and my wife told me there was water under the sink and on the floor.
I looked and found some water on the mounting bracket (the thing you turn to attach the garbage disposal to the mounting ring), so I figured the water was coming from above, rather than from the garbage disposal or the dishwasher. (It is all about 14 years old)
There was some play in the screws that tighten the mounting ring, so I tightened them as much as I could without removing the garbage disposal.
I was able to tighten the mounting bracket about a bit. When I did that it pushed water out from somewhere.

I cleaned up the water and ran the faucet for 5 minutes and ran the garbage disposal for a while. It seems dry now.
Am I out of the woods, or is there more I should do?

If I have to pull it apart, should I just go ahead and replace the GD? If so, are they standard measurements, or should I get the same one? (photo attached, if you can identify it.
Last year I replaced the strainer on the other side of the double sink, but that was pretty easy; not sure this will be .

)

 

[Sylvan]

measure to be sure

 

[Sponsor]

 

[JerryR]

It’s not likely a replacement will just fit unless it’s the same brand and model number.

There should be a label or plate with model number on the current disposal.

 

[Mr tee]

You can't fix it until you find where the problem is.

 

[Helper Dave]

Fill the sink, and let it sit. See if that leaks. If you had to replace your strainer on the other side, maybe the seal is bad on the mounting flange, too.

 

[Dj2]

The GD flange has a bid of plumber's putty where it touches the sink - this putty could be leaking after 14 long years.
It would make sense to replace the GD now too with a quiet, strong and clean GD, don't you think?
You sound like you can do it, do it.