Aeroflex A11812 Pipe Insulation 1-1/8 in Id 1/2 in Wall R3

Product Description

The AEROFLEX A11812 is a flexible closed-cell elastomeric pipe insulation tube designed to reduce heat gain and condensation on mechanical piping systems. With a 1-1/8 inch inner diameter and a 1/2 inch wall thickness, it delivers an R-3 thermal resistance value suitable for residential and light commercial HVAC and plumbing applications. The closed-cell structure resists moisture absorption and vapor transmission, helping prevent surface condensation that can lead to corrosion or mold growth. HVAC technicians and plumbing contractors install this product during new construction and retrofits alike.

This pipe insulation is used on refrigerant suction lines, chilled water piping, domestic cold water lines, and other surfaces where condensation control or thermal efficiency is a priority. The 1-1/8 inch ID is sized to slip over standard copper or steel pipe. It is suited for indoor mechanical room installations, exposed piping runs, and concealed applications where code-compliant insulation is required.

Key Features

• 1-1/8 inch inner diameter fits standard pipe sizes for a snug, secure fit
• 1/2 inch wall thickness provides R-3 thermal resistance
• Closed-cell elastomeric foam construction resists moisture absorption and vapor drive
• Flexible material allows installation on straight runs and around bends without special tooling
• Helps prevent surface condensation on cold piping systems

Compatibility

Designed as an OEM-style replacement and new-installation pipe insulation for use on refrigerant suction lines, chilled water lines, and cold water piping systems requiring a 1-1/8 inch inner diameter insulation tube.

Installation Notes

Pipe insulation of this type is installed by HVAC technicians and plumbers working on mechanical piping systems. Ensure the pipe surface is clean and dry before slipping the insulation tube into place. Slit the tube lengthwise if retrofitting over existing piping, then seal the seam with a compatible elastomeric insulation adhesive to maintain vapor barrier integrity. Follow local mechanical codes and manufacturer adhesive guidelines for seam and joint sealing requirements.

Technical Specifications

• Inner Diameter: 1-1/8 inches
• Wall Thickness: 1/2 inch
• R-Value: R-3
• Insulation Type: Closed-cell elastomeric foam

Standard Information

• Brand: AEROFLEX
• Manufacturer Part Number: A11812