Sioux Chief 886-GA 4" ABS "Push-Tite" "TKO" Gasketed Closet Flange 4" ABS "Push-Tite" gasketed closet flange Gasket seals inside DWV pipe Installs inside 4" cast iron, plastic, copper DWV pipe, also glues over 3" plastic pipe Elastomer gasket is chemical and heat resistant PushTite flanges have larger outlets than other gasketed closet flanges and smooth inner walls with no obstructions or ledges to cause clogs