Blender Rubber Gasket O Ring Seal for Oster Blender Bottom Base Blender Rubber Gasket Seal,Fits Black & Decker Replacement ,Replaces 132812-07 Fits Black and Decker blender models BL1900, BL3900, BL4900, BL5000, BL5900, BL6000, BL9000 Replacement cutter blade Gasket