Treela Rubber Isolation Pads Thick Rubber Washers 1.5 Inch OD 0.5 Inch ID 0.4 Inch Thick Mechanical Vibration Damping Pads Anti Vibration Isolation Pads Rubber Isolator Washer (64 Pcs)

Works great

I have a sound bar on my first floor that vibrates the walls on the second floor no matter what the volume is at. I also live in a townhouse so I want to be kind to my neighbors. These things seem to totally eliminate the vibrating walls. Sometimes I can still hear the volume but no vibration upstairs/in the walls

As described and delivered in time stated

Nice, thick rubber washers, just the right durometer for vibration isolation. Put these on top of the vibration isolators, on the outside of the mounting feet, just under the bolt head, with a big fender washer, for that extra mile of vibration isolation. Mr. Heat Pump purrs like a kitten. Can't even tell it's running, inside the house, a foot away. All rubber, all the way.

Ordered these to install under a gas powered air compressor on a flatbed truck when building a tool skid for the hay field. Worked great and really helped isolate the shaking and metal on metal sound.