4PCS 10cm White Rubber Sealing O-Ring, Blender Sealing Gasket Replacement Parts for Juicer Blender Replacement Seals Parts

Fits perfectly and handy to have extra three.

Although the product is the correct diameter for my Ninja blender, it is 1cm/10mm deep and therefore prevents the lid from being screwed on as it covers the thread. My Ninja is several years old though so maybe they've changed the spec, who knows??

Perfect gust the job

I bought these for my nutri ninja cz the original one smells like onion every time you blend something. This is perfect.