Armacell apt13812 Tube Insulation 1.375in 0.5in Wall 6ft

Product Description

The ARMACELL apt13812 is a closed-cell elastomeric foam tube insulation designed for use on copper tube and pipe systems in residential and light commercial HVAC and plumbing applications. It features a 1.375-inch inner diameter, a 0.5-inch wall thickness, and ships in 6-foot lengths. The black exterior with white inner surface identifies it as a 25/50 flame-spread and smoke-developed rated product, meeting common building code requirements for exposed insulation. The flexible, closed-cell construction resists moisture absorption and condensation, making it well suited for chilled water, refrigerant suction lines, and domestic cold water piping where condensation control is critical.

This tube insulation is intended for installation on copper tube sized to CTS dimensions, where the 1.375-inch inner diameter accommodates the corresponding tube OD. HVAC technicians and plumbers install this product on refrigerant suction lines, chilled water lines, and cold domestic water piping in both new construction and retrofit work. The 6-foot length suits standard pipe runs between fittings and supports. Its flexibility allows it to be worked around bends and offsets without specialized tooling.

Key Features

• Closed-cell elastomeric foam construction resists moisture absorption and vapor transmission
• 0.5-inch wall thickness delivers effective condensation control on cold piping systems
• 25/50 flame-spread and smoke-developed rating meets code requirements for exposed insulation in occupied spaces
• Flexible material conforms to bends and offsets without cracking or splitting
• 6-foot length reduces seam count on standard pipe runs
• Black exterior finish is compatible with standard elastomeric contact adhesive for seam sealing

Compatibility

Designed as an OEM-style replacement and general-use tube insulation for copper tube systems sized to CTS standards where a 1.375-inch inner diameter and 0.5-inch wall thickness are specified.

Installation Notes

Licensed HVAC technicians and plumbers typically install this product. Shut off and depressurize the piping system and allow lines to reach ambient temperature before applying insulation to ensure proper adhesive bonding. Seams and butt joints should be sealed with a compatible elastomeric contact adhesive to maintain vapor barrier integrity. Follow local mechanical codes and ASHRAE insulation thickness guidelines for the specific application.