Oh well! The only clue you will have is that your Neptune front load washer sounds like a jet plane taking off during the high speed spin.
By the way, you can replace just your bearings and not the large outer tub and save a laundry basket full of cash. See Neptune Bearing for more information.
I also provide replacement bearings and seals for the Kenmore Elite and Whirlpool Duet front load washers as well.
Don’t forget if you have a Neptune with a timer knob (non digital) that you need to replace the door latch wax motor if it is the original one before it fails and damages your machine control board. See Neptune help for information.
If you need a replacement 12002533 door boot you can visit neptunebearing.com/page4.html for the link.