Univen flat rubber o-ring seal for Oster and Osterizer blenders. Package of three blender gasket seals. This Made in USA seal is perfect for heavy duty, food service or laboratory use. A common replacement part, this seal sits between the top of the blade and the bottom of the jar. Only one seal is needed per blender. This is a high quality seal which is superior to the original seal. This American made seal is non-toxic, and is made of food safe EPDM rubber. Measures 1.95" inside diameter x 2.59" outside diameter.