Choose either butyl or cork HVAC tapes to help insulate and prevent condensation on pipes, fittings, and tubing used in air conditioning, heating, and refrigeration. Butyl tape is soft, pliable, and can be molded around most fittings and connections. Cork tape seals tightly without drying out and is an effective sound dampening material. It can also be used for gasketing purposes. Grainger has the tape suitable for your specific application.