It’s not uncommon if the black collar is one thing you have to replace if it broke or wore out. Often when your Waring blender jar gets pretty old the seal piece for your blender needs to be replaced for overuse. This Waring 015388-09 Blender Collar is compatible with most Waring Blender models. It’s a genuine OEM product specifically designed for Waring products. Buying a fake replacement products may mean you are compromising with the product’s safety and the person using it. Buying a genuine Waring OEM replacement product ensures you with product safety, reliability and the best performance.