Nomaco IMC318ET Pipe Insulation 3-1/8 in 1 in Wall

Product Description

The NOMACO IMC318ET is a closed-cell elastomeric pipe insulation sleeve designed to fit 3-1/8 inch outside diameter pipes with a 1 inch wall thickness. It features the Nomalock self-sealing closure system, which allows the sleeve to be applied and sealed without adhesive on the longitudinal seam. This product is installed by HVAC technicians, plumbers, and refrigeration mechanics to control heat gain, prevent condensation, and maintain system efficiency on insulated piping runs.

The IMC318ET is suited for residential and light commercial applications where pipes require thermal and condensation control. Typical installations include refrigerant suction lines, chilled water piping, domestic cold water lines, and similar low-temperature piping systems where condensation and energy loss are concerns. The Nomalock closure design speeds installation on new construction and retrofit jobs alike.

Key Features

• Fits 3-1/8 inch outside diameter pipe
• 1 inch wall thickness for thermal and condensation protection
• Nomalock self-sealing longitudinal closure — no separate adhesive required at seam
• Closed-cell elastomeric construction resists moisture absorption
• Flexible sleeve design accommodates straight runs and typical field bends

Compatibility

Designed as an OEM-style replacement and standard fit for 3-1/8 inch outside diameter pipe applications requiring 1 inch wall elastomeric insulation.

Installation Notes

Installation is performed by licensed HVAC technicians, refrigeration mechanics, or plumbers. Isolate and de-pressurize the piping system and ensure the pipe surface is clean and dry before applying the sleeve. The Nomalock closure seals the longitudinal seam without adhesive, but end joints and butt seams should be sealed with a compatible elastomeric insulation adhesive per the manufacturer's guidelines. Follow local mechanical codes for insulation requirements on refrigerant and chilled water piping.

Technical Specifications

• Pipe Outside Diameter Fit: 3-1/8 inches
• Wall Thickness: 1 inch
• Closure Type: Nomalock self-sealing
• Insulation Type: Closed-cell elastomeric

Standard Information

• Brand: NOMACO
• Manufacturer Part Number: IMC318ET