Using your Volta Vortex U4015 dust container lid and seal is simple. First, make sure your vacuum cleaner is turned off and unplugged. Then, carefully remove the old lid and seal from the dust container. Take your new lid and seal, align them properly with the dust container, and press firmly until they fit snugly. That's it! You're ready to use your vacuum again. As for maintenance, after each use, remove the dust container and empty it. Wipe the lid and seal with a dry cloth to keep them clean. If they get really dirty, you can wash them with mild soap and water, but make sure they're completely dry before putting them back on the vacuum. Remember, don't force the lid on or off, as this could damage it. Also, keep the seal away from sharp objects to avoid tears. With these tips, your lid and seal will last a long time and keep your vacuum working great.