Compatible with Ninja blenders BL770A 30/BL770 30/BL773CO 30/BL771 30/BL772 30/BL780 30/BL780C0 30/BL660 30/BL660B 30/BL663/ BL663CO 30/BL660WM 30/BL740 30 /QB3000/QB3000SSW 30/ QB3000QR 30/QB3001SS 30/QB3000QBK/QB3004/QB3005 /BL200 30/ BL201 30/BL201C 30/BL203QBK 30/BL203OCN 30/ BL203QB 30/BL203QY 30/BL204 30/BL206QGN 30/BL206QWH 30/BL206QY 30/BL206QBK 30/BL206QBL 30/BL207QBK 30/BL207QMBL 30/BL810/BL810C/BL810Q/BL820 /BL830, Model 303KKU, 307KKU, 356KKU800, 322KKU770, 357KKU800, 476KKU3000. Size: Diameter: If this O-ring doesn't perfectly fit your model, you can trim it with scissors for a perfect fit. High Quality: This replacement rubber gasket is made of silicone gel, which is safe and durable. It won't easily deform, protecting your blender and acting as a seal. Easy to Install: Simple to install, the rubber gasket on your juicer or blender can be easily replaced. Flexible O-ring, easy to clean. Just replace the old sealing ring to keep the bottom blade clean and leak-free. Package Contents: Enough gaskets to replace your old ones and make your blender look new. Color: White Material: Silicone Gel Size: 8.2 x 8.2 cm Package Contents: 6 * Sealing Ring Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.