For meat grinder Bankeryd AN-90 (outer) and BN-98 (inner).
When mounted as inner: Absorbs small movements in the mincer set (knives and plates) and protects slightly against over-tightened worm housing nut.
When mounted as external (outer): Seals between the worm housing and the grinder chassis so that meat and meat juices do not leak out.
BM's article number: 20001753