Coax-Seal is a special material which will quickly and effectively seal all types of coaxial fittings of any shape from moisture, water and corrosion. Coax-Seal stays flexible for years thus insuring moisture proof connections. Insures good SWR and long coax life. Coax-Seal also allows you to disconnect and reconnect fittings with the same material by simply re-forming the plastic. Coax-Seal is the only material that will adhere to vinyl and poly vinyl connector outer covers. Coax-Seal is non-toxic, non-corrosive, non-conducting, and has hundreds of uses in electronics. 1/2" x 12 ft. Stays flexible at any temperature. Four 12 ft. rolls per pack.