SiliconSeal Adhesive- Backed Gasketing Made of SiliconSeal a non-toxic material that is impervious to fungus/mildew and unaffected by sunlight or uv rays Pemko S44_ Adhesive-Backed Fire/Smoke Gasketing Pemko S442 Adhesive-Backed Fire/Smoke Gasketing Pemko S773_ Adhesive-Backed Fire/Smoke Gasketing