Closet Flange Firestop Gasket, ASTM E814, ANSI/UL 1479, CAN/ULC-S115

STI flange firestop gasket 3 in, 4 in nominal, 1/4 in thickness, 120 DegF, steel, galvanized, red. SpecSeal closet flange firestop gaskets are one pc, molded rubber, intumescent pads that install beneath a 3 or 4 in 76 or 102 mm closet flange to effectively firestop the opening. The die cut rubber gasket is perforated to delineate removable inserts sized to accommodate various outer dia of toilet flanges. Traditional fire stopping methods require the firestop material to be applied around the pipe prior to setting the toilet flange, which can be problematic if the firestop material is not recessed a sufficient distance from the top to accommodate the throat of the flange. The alternative is to apply the fire stopping from the underside of the floor, necessitating the use of ladders or lifts. SpecSeal closet flange firestop gaskets solve the problem by providing a labor-friendly method of properly fire stopping the opening.