1. Prevent backflow: Prevent drainage water from flowing back into the room; Prevent leaks and spills. 2. Anti-odor and insect-proof: seal pipes and floor drains so that odor cannot return indoors 3. No need to worry about deformation after stretching, super flexible and wear-resistant 4. Wide range of uses: can be connected to underground septic tanks, sewers, used with basement showers and floor drains, and can be effectively installed in PVC pipes 5. Made of high-quality silicone, completely environmentally friendly and can be cut and used 6. Applicable to inner diameter 37-45mm, 40/50 tubes can be used
