Nomaco THERMTC-138112 Rubber Pipe Insulation 1.375in Id

Product Description

The NOMACO THERMTC-138112 is a closed-cell rubber pipe insulation sleeve designed to reduce heat gain and condensation on refrigerant, chilled water, and domestic cold water piping. It features a 1.375-inch inner diameter, a 1.5-inch wall thickness, and a 6-foot length per section. The thick rubber wall delivers strong thermal resistance, helping maintain system efficiency and preventing moisture-related damage to surrounding structure. Plumbers, HVAC technicians, and mechanical insulation contractors install this product as part of routine pipe insulation work on new construction and retrofit projects.

This insulation sleeve is suited for 1.25-inch CTS (copper tube size) pipe and 1-inch IPS (iron pipe size) pipe, making it applicable across a range of residential and light commercial plumbing and HVAC installations. Typical applications include chilled water supply and return lines, refrigerant suction lines, and cold domestic water piping where condensation control is a priority. The 6-foot section length allows for efficient coverage with fewer joints on straight runs.

Key Features

• 1.375-inch inner diameter fits 1.25-inch CTS and 1-inch IPS pipe
• 1.5-inch wall thickness provides substantial thermal resistance for condensation control
• 6-foot section length reduces the number of joints on straight pipe runs
• Closed-cell rubber construction resists moisture absorption and maintains insulating performance over time
• Flexible material conforms to minor pipe irregularities and simplifies field installation

Compatibility

Designed for use on 1.25-inch CTS copper pipe and 1-inch IPS pipe in residential and light commercial plumbing and HVAC applications.

Installation Notes

Rubber pipe insulation of this type is installed by licensed plumbers, HVAC technicians, or certified mechanical insulation contractors. Shut down and depressurize the pipe system before beginning work where required by job conditions. Sections should be slid over pipe ends during rough-in where possible, or slit longitudinally for retrofit installation on existing pipe using approved contact adhesive at seams and butt joints. Follow local mechanical codes and manufacturer adhesive recommendations for joint sealing to maintain rated thermal performance.

Technical Specifications

• Inner Diameter: 1.375 inches
• Wall Thickness: 1.5 inches
• Length: 6 feet
• Compatible Pipe Size (CTS): 1.25 inches
• Compatible Pipe Size (IPS): 1 inch
• Material: Rubber (closed-cell)

Standard Information

• Brand: NOMACO
• Manufacturer Part Number: THERMTC-138112