Foam Guard-Speaker Cone Edge Sealer, White PVA, MI-1291FG Foam Guard, PVA Vinyl Emulsion Speaker Cone Edge Sealer, Part # MI-1291FG 1 oz. bottle & brush seals foam surround woofer edges to extend life by 50% Prevents moisture absorption, microbial attack, and UV damage Also be used to edge treat paper cones and cloth cone surrounds One time application, easy to apply, water cleanup, treats 6 to 8 speaker surrounds