I think the word you want is "dampers"
Aka Rubber Mounts, or spring mounts
Yeah the seller called them Isolators
They should support the generator , but should have some give so as to absorb the vibration
In my experience, big soft round donut style,
Hole in the middle No built in mounting stud
Work best
Those in your link are more like stiff rubber feet you screw onto the bottom of the generator
Around these forums
Isolator is used to mean 12vdc power and battery separation
I can explain it to you.
But I Can Not understand it for you !
....
Connected using T-Mobile Home internet and Visible Phone service
1997 F53 Bounder 36s