Keep drains clear, stop sewer backflow, and maintain a hygienic floor area with this floor drain trap seal core. Designed for use in floor drains connected to sewers and underground septic tanks, it promotes rapid drainage, prevents water accumulation, and blocks odors and contaminants from entering living spaces. Key benefits Prevents backflow: Acts as a drain backflow preventer to stop sewage and unpleasant air from coming up through the drain. Catches debris: Functions as a drain strainer to trap hair, lint, and other particles that cause clogs. Maintains drainage performance: Promotes fast water flow and prevents standing water regardless of the volume of water. Keeps spaces cleaner: Reduces the chance of dirt and smells rising from connected sewer lines. How it solves common problems Installs in the drain opening to provide a physical barrier against unwanted solids and sewer gases while allowing water to pass through quickly. Minimizes clogs by capturing debris before it enters the plumbing, reducing maintenance needs. Prevents sewer air and contaminants from entering rooms served by floor drains and septic connections. Practical features and compatibility Intended for use with floor drains and drains linked to underground septic tanks and sewer systems. Combines backflow prevention and strainer functions in one component for simple, reliable performance. Use scenarios Bathroom shower or floor drain to trap hair and block sewer odors. Laundry room or utility area drain to catch lint and prevent standing water. Basement or garage floor drain connected to an underground septic or sewer line to reduce smells and deter pests. A straightforward solution for improving drainage, preventing backflow, and keeping interior floor drain areas cleaner and more reliable.