•Maximum Odor-Sealing EffectThis reliable anti-backflow laundry pipe gasket adopts an incredible air-tight sealing quality. It effectively stops strong sewer-smelling gasses from leaking out and permeating everywhere in your living space which can lead to respiratory problems. The washing machine drain valve also comes with a multi-layer sealing ring for a much better odor-blocking ability. Furthermore, its automatic rebound plugging also works to guarantee that no insects and pests could climb up after draining. Eliminating the risk of pesky creepy crawlers from invading your home and causing food contamination, spreading of disease, property damage, and various health issues.