Armacell SS3438 Self-seal Pipe Insulation 3/4 in 3/8 in Wall

Product Description

The ARMACELL SS3438 is a self-sealing flexible foam pipe insulation sleeve designed to reduce heat gain and condensation on cold-water and refrigerant piping. The self-seal design features a factory-applied adhesive strip along the longitudinal slit, eliminating the need for separate tape or contact cement during installation. Built for a 3/4 inch inner diameter pipe with a 3/8 inch wall thickness, each section runs 6 feet in length. Licensed HVAC technicians and plumbers install this product on copper, PVC, and CPVC lines where thermal performance and moisture resistance are required.

This insulation sleeve is suited for residential and light commercial applications including chilled water lines, refrigerant suction lines, domestic cold-water supply piping, and drain lines subject to condensation. The closed-cell foam construction resists moisture absorption and vapor transmission, making it appropriate for both indoor and exposed mechanical room installations. It is commonly applied during new construction rough-in and retrofitted on existing piping during system upgrades or re-insulation projects.

Key Features

• Self-sealing adhesive strip allows tool-free closure without tape or cement
• 3/8 inch wall thickness provides thermal and condensation control on cold piping
• Fits 3/4 inch inner diameter pipe — compatible with standard 3/4 inch copper and plastic lines
• 6-foot section length reduces seam count on straight runs
• Closed-cell foam construction resists moisture absorption and vapor drive
• Flexible material conforms to pipe routing in tight mechanical spaces

Compatibility

Designed as an OEM-style replacement and standard fitment for 3/4 inch OD piping in residential and light commercial HVAC, plumbing, and refrigeration applications.

Installation Notes

Installation is performed by licensed HVAC technicians or plumbers. Shut off and drain or depressurize the piping system before fitting insulation on active lines. Slide the sleeve over the pipe or slit and wrap around existing pipe, then press the self-seal strip firmly along the full length of the seam for a complete closure. Butt joints between sections should be sealed with appropriate foam insulation tape to maintain continuous vapor barrier integrity.

Technical Specifications

• Inner Diameter: 3/4 inches
• Wall Thickness: 3/8 inches
• Length: 6 feet
• Closure Type: Self-sealing adhesive strip

Standard Information

• Brand: ARMACELL
• Manufacturer Part Number: SS3438