Product review (5 stars): an excellent collar from insinkerator.
hello,
  if you are getting splash backs when using the insinkerator, this might be the time to get a replacement collar.  one uses the sink so much that some small thing just gets pushed to the back of the brain as daily usage.  but, once this replacement plops right in and fits perfectly in the hole, a whole new ballgame comes into play.  it does deaden the sound of stuff grinding and keeps all splashes from popping back out.  an excellent collar from insinkerator.