Aeroflex AC341 Pipe Insulation 3/4 in Id 1 in Wall R7.7

Product Description

The AEROFLEX AC341 is a closed-cell elastomeric pipe insulation sleeve rated at R7.7, designed for thermal insulation of refrigerant lines, chilled water piping, and domestic cold water lines. With a 3/4 inch inner diameter and a 1 inch wall thickness, this product delivers high thermal resistance in a flexible, easy-to-install format. HVAC technicians and plumbers use closed-cell foam insulation like this to prevent condensation, reduce heat gain, and maintain system efficiency in both residential and light commercial applications.

The AC341 is suited for wrapping copper or plastic piping in HVAC refrigerant suction line installations, chilled water distribution systems, and cold water supply lines where condensation control is a priority. The 1 inch wall thickness provides substantial thermal resistance, making it appropriate for applications in unconditioned spaces such as attics, crawlspaces, and mechanical rooms where ambient heat gain would otherwise degrade system performance.

Key Features

• R7.7 thermal resistance rating for effective heat gain and condensation control
• 3/4 inch inner diameter fits standard 3/4 inch OD copper and plastic pipe
• 1 inch wall thickness provides high insulating performance in unconditioned spaces
• Closed-cell elastomeric construction resists moisture absorption and vapor transmission
• Flexible material conforms to pipe runs and simplifies installation around fittings

Compatibility

Designed as an OEM-style replacement and standard-fit insulation sleeve for 3/4 inch OD refrigerant suction lines, chilled water piping, and cold water supply lines in residential and light commercial HVAC and plumbing systems.

Installation Notes

Installation is typically performed by licensed HVAC technicians or plumbers. Shut off the system and allow piping to reach ambient temperature before applying insulation. Slit the sleeve lengthwise to slide over existing pipe runs, and use manufacturer-approved contact adhesive to seal all longitudinal seams and butt joints for a continuous vapor barrier. Avoid compressing the foam wall thickness, as compression reduces the effective R-value.

Technical Specifications

• Inner Diameter: 3/4 inches
• Wall Thickness: 1 inch
• Thermal Resistance: R7.7
• Insulation Type: Closed-cell elastomeric foam

Standard Information

• Brand: AEROFLEX
• Manufacturer Part Number: AC341