Installed closet flanges shall be Sioux Chief 887 Series Push Tite closet flange. Flange ring shall be full-swivel stainless steel, with sufficient holes for securing to floor and slots for inserting closet bolts. Flange outlet shall provide full/spherical flow for clog resistance. Engineered elastomeric flange gasket shall seal inside 4 nominal Sch. 40 piping.