A 2.7 fl. oz. tube of Clear 500 degree RTV Silicone Sealant - 500 Degree heat resistant silicone sealant forms a tough rubbery adhesive seal that withstands 450 degree continuously and 500 degree intermittantly.  Uses include: sealing fireplace inserts, solar panel repairs, stoves, flashings - anywhere a clear permanent elastic seal is needed.  Adheres to most materials.