Isolate It: Sorbothane Vibration Isolation Washer 30 Duro (.13" ID - 0.5" OD - .13" Deep) - 12 Pack

I’ve used sorbothane for a lot of acoustic applications over the years and it’s an amazing material. This brand does a good job packaging it for common applications. Like most things, it’s up to you to select the right package for your application, as well as determine if sorbothane is the right material for the job. Just exercise a little common sense and you’ll have a fantastic vibration damping material.To address the low scoring reviews here, compare this to a trampoline. You jump on it and the trampoline absorbs a lot of that energy, keeping it from reaching the ground. If you place the netting of the trampoline right on the ground, the energy goes straight to the ground and the trampoline through no fault of its own has failed to perform its function. If you need spacers for mounting a 20-30lb amplifier, torque fasteners into just a few of these like crazy to that point that this stuff compresses into rock hardness, they cannot and will not do any of the things you’re asking them to. Buy spacers to use as spacers, evenly distribute 10-12 of these, or use less of a more appropriate density sorbothane package, apply only enough torque to the fasteners so that they maintain some of their shape, and you’ll get great results.There’s no complex math or measuring necessary, again, just practice a little common sense. Don’t try to mount a mirror with 4 pieces of scotch tape. Don’t try to stabilize a washing machine with an unbalanced motor with a few tiny pieces. This stuff can be compressed to an impressive degree and still do a fantastic job eliminating vibrations, that’s part of what makes this material great, but generally the better it can hold the shape you purchased it in, the better it can perform.I’m in no way affiliated with IsolateIt, nor have I ever paid a dime less than whatever the Amazon price is. It’s an expensive product and where rubber, plastic, butyl, etc. are a better fit for the job, I’d use and recommend those for a lot less money. If an application can benefit from this stuff, I want to see people enjoying the same great results I have.

Does work well I must say.

I have a P1000x1bd sandwiched with these (screw, washer, sorbothane, amp, sorbothane, washer) and attached to my subwoofer box. I'm running 2 T1D412's on 1000w RMS @ 1ohm, my trunk flexes so much it is almost concerning, yet you could balance a quarter on my amp with these dampening the vibration. Ok, that's an exaggeration, but it is noticeably the only thing that stays still while the subs are hitting.

These really helped to dampen the noise of my attic fan. Now instead of a fan motor, I hear a soft flow of air very similar to heat coming out of my heat registers in the winter. I doubled them up on each of the four mounting screws for the fan where it is attached to the frame of the house. It really did work well.

I was planning to use this for my car audio setup, but it did not work out. I was trying use these rubber rings as a washer for the nails, so I could mount the amplifier on top of the subwoofer, without damaging the amp. However, these were too soft, sticky and "gooey" for this application. I recommend looking up what "duro" means before buying this product. I overlooked this small detail. I wound up using the bottom section of a tire valve stem to act as a spacer.

Was great too hold my phone on the dash board

I was expecting better results

Works great