It is an OEM item which is made for use with Krups blenders. This component provides a tight seal between the knife support and the bowl. Over time the material will wear out and it may begin to crack eventually requiring a replacement to prevent any leaks. Refer to the specific diagram of your model for the exact location and the correct...Read more installation of the new part. It is a high-quality seal which is made of a durable rubber material and is sold as an individual item. You will need a wrench set to take apart the housing and gain access when replacing this gasket. Replacing it is a simple task that does not require any tools, remove the bowl and the old seal, secure the new seal under the bowl.