Selected Material: The shower stopper is made of high-quality silica gel and PP plastic, which is non-toxic and odorless and does not contain any harmful substances. Smooth surface without burrs, which not only does not hurt your hands when you use it; The acid and alkali resistant valve core fits tightly around the corrosion resistant gasket, keeping odors, sewage, pests and rodents out. Function: Drain pipe gaskets are mainly used to be inserted into drains, floor drains and under-sink drains to prevent odors, dirty water, vermin from entering or backing up and overflowing, keeping a clean, sober and tidy space. Widely Uses: The anti-odor shower stopper is widely used for sewer openings in bathrooms, kitchens, toilets, washing machines, washbasins, bathtubs, sinks, showers and other places.