Sioux Chief 4 in. D Plastic Floor Drain Trap Seal

The Trapshield work by closing off exposure of the water in the p-trap to open air above the drain. Closing off the trap to open-air substantially reduces evaporation of the water in the trap. Why would I need one-when traps serve a fixture that’s used infrequently, like bathrooms in vacant areas of a building or when the area above the drain is particularly warm/dry, the water in the trap can evaporate. Trap protection devices help protect traps where a trap primer either was not installed or has become ineffective. What is it made from the rigid ring of the trapshieldtm is made from chemical-resistant polypropylene and the flexible sealing material is molded from silicone. These materials were chosen for their overall durability and resistance to most solvents, chemicals and sewer gas.