Armacell ARMA-APT03438 Pipe Insulation 3/4 in Id 3/8 in Wall

Product Description

The ARMACELL ARMA-APT03438 is a closed-cell elastomeric pipe insulation sleeve designed to reduce heat gain, control condensation, and maintain system efficiency on mechanical piping. Each section measures 3/4 inch inner diameter with a 3/8 inch wall thickness and runs 6 feet in length. The flexible foam construction conforms easily to copper, steel, and plastic pipe without cracking or splitting. HVAC technicians, plumbers, and mechanical contractors use this product on chilled water lines, refrigerant suction lines, domestic cold water piping, and similar low-temperature applications where moisture and energy control are critical.

This insulation is suited for residential and light commercial mechanical systems where pipe sweating and thermal loss are primary concerns. The 3/4 inch ID fits standard 3/4 inch nominal pipe and tubing. Each carton contains enough material to cover 330 linear feet, making it practical for larger installations or service truck stocking. It is commonly installed on suction line sets, fan coil unit piping, chilled water distribution, and cold domestic water lines in both new construction and retrofit projects.

Key Features

• 3/4 inch inner diameter fits standard 3/4 inch nominal pipe and tubing
• 3/8 inch wall thickness provides thermal and condensation control on cold piping systems
• 6-foot sections allow straightforward handling and cutting on the job
• 330 linear feet per carton supports large-scale or multi-unit installations
• Flexible closed-cell foam construction resists moisture absorption and conforms to pipe runs
• Manufactured in the United States

Compatibility

Designed as an OEM-style replacement and new-installation insulation sleeve for 3/4 inch nominal copper, steel, and plastic pipe in HVAC, plumbing, and refrigeration applications.

Installation Notes

Pipe insulation of this type is typically installed by licensed HVAC technicians or plumbers following local mechanical code requirements. Shut down and depressurize or drain the piping system before installation where required by site conditions. Slit the insulation lengthwise to slip it over existing pipe, then seal all seams and butt joints with a compatible closed-cell foam adhesive to maintain a continuous vapor barrier. Avoid compressing the foam wall during fastening, as compression reduces effective thermal performance.

Technical Specifications

• Inner Diameter: 3/4 inches
• Wall Thickness: 3/8 inches
• Section Length: 6 feet
• Carton Coverage: 330 linear feet
• Country of Origin: United States

Standard Information

• Brand: ARMACELL
• Manufacturer Part Number: ARMA-APT03438