You wish.....
Yeah, like that stuff will hold when out there blasting over wakes at 45 mph. Nope........been there, done that.
O.K....just looked up your parts, if you don't mind the crack, then you could try some silicone. But I dont' know if it would be worth taking to chance.
If this gage is sealed by that cover and water gets to it, then it could be costly.
I'm trying to figure out which part has the gage cover on it. The gages themselves, or the fascia that covers the entire console.
I feel pretty sure it's not in the crome bezel.
If the glass is in the fascia, which means you'd have to remove all your switches etc... to replace it, it will cost about $287 dollars. Part # 204471147. But if it's built into the gage cluster, then that will set you back $415 dollars. Man, that hurts. Part number is 204471105.
Determine whether or not it's built into the fasica, or if it's actually part of the gage itself. If it's the fascia, you may make out a bit cheaper.
Another idea is, if that glass is part of the gage and is removable, maybe you could get a glass shop, somewhere local to cut you one. Just an idea...