Product review (5 stars): Little part serves big purpose!
The only way to keep my dishwasher from leaking is to replace these annually or when they start to wear.  Who would have though that this little plastic piece would lead me to having Sears come out and pay for the refinishing of a section of my kitchen wood flooring due to water damage.  When the repairman told me so long as you replace these when worn you should be good and he tossed me an extra pack he had on hand.  This little part serves a big purpose.