1-1/4" Copper Tube Size (1-3/8"OD) x 72" x 1/2" Wall Pre-Slit Pre-Glued Tubular Insulation, Foam Cover

K-Flex 7PXL048138 – 1-3/8" OD x 1/2" Wall Pre-Slit, Pre-Glued Pipe Insulation, 6' Length

The K-Flex 7PXL048138 is a closed-cell elastomeric pipe insulation section designed for 1-1/4" copper tubing (1-3/8" outer diameter). This 6-foot length of insulation features a 1/2" wall thickness and includes a pre-slit, pre-glued seam to simplify field installation while maintaining a secure thermal and moisture barrier. It is intended for use in residential, commercial, and light industrial HVAC and plumbing systems.

Manufactured in the United States, this product provides effective thermal resistance and vapor control, helping reduce energy loss and mitigate surface condensation on hot and cold piping systems. Its flexible construction allows for easy handling and application in confined or irregular spaces.

Key Product Features

• Pre-Glued Seam – Factory-applied adhesive on the seam allows for tool-free closure and fast, uniform installation.
• Closed-Cell Foam Structure – Minimizes heat transfer while preventing moisture ingress.
• Designed for 1-1/4" CTS – Matches standard copper tube dimensions to ensure proper fit.
• Made in the USA – Produced to meet domestic quality and performance standards.
• Flexible and Lightweight – Easily conforms around bends and fittings for full system coverage.

Technical Specifications

• Nominal Copper Tube Size: 1-1/4 inch
• Outside Diameter: 1-3/8 inch
• Wall Thickness: 1/2 inch
• Length: 72 inches (6 feet)
• Material: Closed-cell elastomeric insulation

Installation Guidelines

Ensure pipe surfaces are clean and dry prior to installation. Align the pre-slit seam, wrap the insulation around the pipe, and press the adhesive seam to close. Use a utility knife for trimming as needed. Additional sealing methods may be applied where required by specification or local code.

Contractor Use Case

This product is suitable for chilled water, hot water, and refrigeration applications requiring a balance of thermal performance and installation efficiency. Its integrated adhesive and flexibility reduce labor time while supporting reliable long-term system insulation performance.