2 pezzi valvola di non ritorno per scarico doccia, tappo di scarico unidirezionale antiodore per fognatura, tappo di scarico a pavimento per cucina e bagno, bianco e nero

Premium Materials: The backflow preventer is made of high-quality silicone and PP plastic, non-toxic and odorless, containing no harmful substances; its smooth, burr-free surface won't scratch your hands during use; the acid and alkali resistant valve core tightly fits the corrosion-resistant sealing ring, effectively blocking odors, sewage, pests, and rodents. Easy Installation: This odor-proof drain seal is 6.5 cm high and 5.5 cm wide, suitable for installation in drain holes with diameters of 3.7-5.2 cm. No need to remove floor tiles or drain pipes, simply plug and play for easy installation. Double-Layer Design: The washing machine drain pipe seal features a double-layer hollow design, enabling 360° all-around drainage with a flow rate of up to 36 liters/minute, ensuring rapid drainage and preventing blockages; the internal inverted wedge-shaped connecting surface secures the inner core, preventing it from falling off or shifting. Function: The drain pipe seal is mainly used to insert into drain pipes, floor drains, and drain outlets under sinks to prevent odors, sewage, and pests from entering or backflowing, keeping the space clean and tidy. 【Wide Range of Uses】This odor-proof sealing plug is widely used in drain openings in bathrooms, kitchens, toilets, washing machines, sinks, washbasins, shower rooms, and other places to prevent odors from escaping.