- Compatibility: This replacement accessory is designed specifically for Ninja blender models including BL450-30, BL451-30, BL455-30, BL456-30, BL480-30, BL480D, BL481-30, BL482-30, BL486CO, BL487, BL488W, BL640, BL641, BL642, and many others. It is not compatible with models ending in -70, such as BL450-70, BL451-70, BL455-70, and others listed. Please ensure the model number is an exact match for proper fit. - Functionality: These replacement parts are tailored for the Ninja Auto-iQ Pro Extractor Assembly with 7 fins. They are specifically designed to fit 18, 24, and 32-ounce cups but do not fit 16-ounce cups. The precise fit ensures optimal blending performance. - Size and Material: The silicone rubber gasket measures 3.94 inches (10 cm) in diameter, providing a sturdy and flexible seal that effectively prevents leaks during blending. - Performance: Featuring enhanced durability, this seal ring stands up to repeated use while keeping your blender base clean and free from mold. For best maintenance, use a toothpick to gently remove and clean the gasket after each use. - Use Scenarios: 1. Ideal for daily smoothies, allowing you to blend a variety of ingredients without the worry of leakage. 2. Perfect for preparing soups and sauces, ensuring a tight seal allows for consistent blending of both hot and cold mixtures. 3. Convenient for meal prep, as you can blend large batches and store them in the compatible cups directly after blending. Choose the right replacement parts for your Ninja blender to enhance your blending experience and ensure reliable performance.