FEATURES * 3 per package * Material: Nitrile (Buna N), 70 Duro * Size: 1.239" ID x 1.379" OD x .070" C/S FITS: Rotor Holder MODEL(S) THIS PART FITS: CoagSpin (M940-22), CritSpin (M960-12), CritSpin (M961-22), CytoFuge 2 (M801-22), CytoVet (V801-22), DiffSpin (M701-22), Express 2 (M501-22), MicroPrep (G600-22), MP (M900-22), MP (M901-22), RP (M920-22), VET Express (V501-22), VT (V901-22), VT (V901-22)