pThe 3M™ Center Adapter Gasket 6896, Respiratory Protection Replacement Part, works with the 3M Full Facepiece 6000 Series (sold separately). Use this gasket to seal 3M Center Adapter Assembly 6892 (sold separately) or 3M DIN Port Assembly 6884 (sold separately) to facepiece. This replacement part can extend the service life of respiratory protection equipment and potentially result in cost savings./p