Large quantity: comes with 8 packs rubber gaskets, convenient for you to replace the old or broken one, and this gasket with elastic and stretchable, please ensure optimal fit in order to prevent fall off when you removed the coverDimension: the outer diameter of the replacement rubber gasket measures about 4.0 inch, the inner diameter is about 3.75 inch, this gasket has a little ridge or a lip for better sealingCompatible with: replacement gaskets with lip is only compatible with CURRENT MODEL 900 series (900 W Max), not replace the Magic (250 W Max), Rx (1700 W Max), Baby (200 W Max), non-Pro 600models or . 101B (Model 1018)Warm tips: please soaking it into hot water if the gasket seems too tight for the first time to use, or wash with soap and water before using, stretch gasket before installing to ensure optimal fitSeal firmly: blender gasket is made of silicone rubber, this replacement part is designed for compatible with 900w blender or mixer to create a good seal; Note: this is not the product, the mention of and any related model designation above is only for purposes of demonstrating compatibilityInstallation instructions:Step 1: The silicone ring into the boiling water softened;Step 2: Press on the knife and unscrew the deck from the bottom;Step 3: Remove the deck, washer, knife;Step 4: Install pressure ring seal;Step 5: Install knives and shims;.Step 6: press on the knife and secure the deck from the bottom.Colour:GrayMaterial:plasticPackage Contents:8* Blender GasketsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.