2-1/2"Copper Tube Size (1-5/8"OD) x 72" x 1/2" Wall Pre-Slit Pre-Glued Tubular Insulation, Foam Cover

K-Flex 7PXL048258 – 2-5/8" OD x 1/2" Wall Pre-Slit, Pre-Glued Pipe Insulation, 60' Box

The K-Flex 7PXL048258 is a closed-cell elastomeric foam insulation designed for mechanical piping systems requiring thermal efficiency and condensation control. Sized for 2-1/2" copper tube (2-5/8" outer diameter), this product features a 1/2" wall thickness and is packaged in 60 linear feet per box. Its pre-slit and pre-glued seam allows for secure, tool-free field installation without additional adhesive materials.

This insulation is manufactured in the USA and is suited for both residential and commercial use. It provides reliable long-term performance in hot and cold water piping systems, supporting energy conservation and vapor barrier integrity in compliance with applicable mechanical insulation standards.

Key Product Features

• Pre-Slit with Factory Adhesive – Simplifies installation and reduces labor time with a ready-to-close self-sealing seam.
• Closed-Cell Foam Construction – Offers consistent R-value while resisting moisture vapor transmission.
• Designed for 2-1/2" CTS – Sized to fit standard copper tube dimensions without additional adjustment.
• Thermal Performance – Helps maintain system efficiency by minimizing thermal loss.
• Domestic Production – Manufactured in the United States and compliant with industry insulation standards.

Technical Specifications

• Nominal Pipe Size: 2-1/2 inch Copper Tube Size (CTS)
• Outside Diameter: 2-5/8 inches
• Wall Thickness: 1/2 inch
• Total Length: 60 feet per box
• Material: Flexible closed-cell elastomeric foam
• Load Factor: 0.21
• Warranty: Limited

Installation Overview

Apply insulation to clean, dry piping. Align the pre-slit seam and press the adhesive edges together to form a secure seal. Field trimming can be done using a utility knife. For environments requiring code compliance or added protection, the use of approved sealing tape or mechanical fasteners may be necessary. Follow all jobsite and manufacturer instructions for best results.

Professional Use Cases

This insulation is ideal for use in HVAC, plumbing, and mechanical systems where rapid installation, thermal control, and vapor barrier continuity are essential. Its field-ready pre-glued seam helps reduce installation time while maintaining consistent insulation coverage on large-diameter copper piping.