Fab International Replacement Gasket Compatible with Cooks Personnal Sport Blender 4 Pack (AFTER MARKET PART) Please verify the size of the gasket to ensure it will fit your blender before purchasing the gasket due to the gasket being non returnable and non refundable. Made from food grade Silicone Rubber, May not fit all the models This is an after Market product. We ake no claims that this is an OEM product. Outside diameter 2.5 inches or 63 mm Approximately, Inside Diameter 2 1/4 inches or 60 mm approximately, Thickness 1/32 inch or 1.5 mm approximately.Please Look at the pics carefully before buying. The grid will give you good idea about the size of gasket. Wash with soap and warm water before using. This is an after market item and not an Original Equipment Manufactured item the all brand names and trademarks used for reference purpose only, this product is not endorsed or sponsored by Cooks or any other Original Equipment Manufacturer, nor there is any intent to imply that this is an original equipment part.