4Pcs Rubber Isolators 304 M6, Keenso Rubber M6 Vibration Mount AntiVibration Boat Bobbins (VD20*15 M6*18)

Have had experience with these types before. I don’t see any reason they won’t do what I need done.

For my small water pump application it was way to firm

Bought these to mount a solar charge controller in an RV-- probably overkill, but protecting electronics from the effects of a 9.4 earthquake (what an RV is subjected to in transit) is worth a few bucks.These mounts are sturdy and would hold a great deal more than my load. I can easily recommend these for purchase.

Prompt delivery.Completely stopped humming noise from my aircons on the roof, above my bedroom.

they are to small for an ac condenser mounting , the condenser is 200 lbs this things are for toys

These work well. require metric bolts & nuts, though. Would buy them again

Does what it should

Purchased a log splitter that came with nylon washers to act as some sort of dampener. Actually split during 1st engine startup. Because the fasteners were metric I purchased these to act as real engine isolators. They are working great.

Just the right size and rubber not too soft

Quality

These were pretty much what I expected. Decent quality etc. The only negative I feel is the lack of proper specs on the durometer of the rubber (hardness/softness) Knowing Shore A hardness (..40, 50, 60, etc..) would help indicate the amount of movement the damper might allow so depending on what vibration source you're dealing with, a different Shore A value might give a better result. These are generic and not designed for a specific application so they are what they are.In my application they were to isolate a 4 stroke Subaru brand, fuel injected pressure washer engine from the "cart" that held it. I found that these were a bit soft (Shore A +/- 30 I would guess). The cart is tilted 20 to 40 degrees when moving it so, if the motor is running, the anti-vibration mounts now carry the weight (and shaking) of the motor in sheer rather than just in compression when sitting level. I see a lot of flex and movement in this position such that I would have wanted a slightly higher durometer rubber used.

This will not work in my application - I need male stud on one end and internal female threads on the other end, as in the product illustration. The product sent is completely wrong and useless to me.

The package should include the 8 mm nut, washer and bolt to complete the package.I've set this up for my garage door oppener and it removed a bunch of vibration traveling through the floor.