Get reliable performance and high quality with AEROFOAM Rubber Air Conditioning Insulation Tube that measures 5/8" and 3/4" thick. Durable design and high-quality materials make it an ideal choice for providing thermal insulation and maintaining the efficiency of your HVAC system. Tube Measurement: 5/8". Pipe thickness: 3/4 inch. Suitable for air conditioning: used to insulate air conditioning pipes and improve its efficiency. Easy to install: Flexible design is easy to install and handle.