Aeroflex 634-ac58112 Pipe Insulation 5/8 in Id 1-1/2 in Wall

Product Description

The AEROFLEX 634-ac58112 is a closed-cell EPDM elastomeric pipe insulation tube in unslit form, designed to thermally protect piping in HVAC, refrigeration, plumbing, and dual-temperature systems. With a 5/8-inch inside diameter, a 1-1/2-inch wall thickness, and an R-value of 13.5, this cover delivers meaningful thermal resistance while resisting moisture absorption and water vapor transmission. The EPDM rubber elastomeric foam construction gives it superior UV resistance and long-term durability compared to standard nitrile-based foams. Licensed mechanical insulation contractors and HVAC technicians typically install this product on copper and iron pipe systems where both condensation control and thermal efficiency are required.

This insulation is suited for 3/8-inch IPS iron pipe and 5/8-inch OD copper tubing in residential and light commercial applications. Rated for temperatures from -297 degrees F to 257 degrees F, it handles chilled water, hot water, refrigerant suction lines, and variable refrigerant flow piping. The unslit tube format requires the pipe to be fed through during installation rather than wrapped, making it a preferred format for new construction or pre-piped assemblies where a clean, uninterrupted insulation surface is needed.

Key Features

• Closed-cell EPDM rubber foam construction resists moisture absorption at 0.2 percent and limits water vapor permeability to 0.03 perm-in
• R-13.5 thermal value with thermal conductivity of 0.237 to 0.252 Btu-in/hr-sq-ft-degrees F
• Wide temperature range of -297 degrees F to 257 degrees F covers refrigeration, chilled water, and hot water applications
• Flame Spread Index of 25 and Smoke Developed Index of 50 support compliance with common building code requirements
• UV-resistant EPDM formulation extends service life in exposed outdoor or partially exposed installations
• Domestic manufacture; 6-foot length per section

Compatibility

Designed for use on 3/8-inch IPS iron pipe and 5/8-inch OD copper tubing in dual temperature systems, hot and cold water piping, HVAC systems, refrigeration systems, and variable refrigerant system applications.

Installation Notes

Mechanical insulation work on refrigerant and HVAC piping should be performed by qualified HVAC technicians or licensed mechanical insulation contractors in accordance with applicable local mechanical codes. For unslit tube installation, the pipe must be threaded through the insulation before connections are made; adhesive closures at butt joints are recommended to maintain vapor barrier integrity. Power down and depressurize any active systems before cutting or fitting insulation around valves, fittings, or flanges. Avoid compressing the foam wall during fastening, as compression reduces effective R-value.

Technical Specifications

• Inside Diameter: 5/8 inches
• Wall Thickness: 1-1/2 inches
• For Pipe Size: 3/8 inches IPS
• Copper Tubing Size: 1/2 inch OD
• Length: 6 feet
• Material: EPDM Rubber Elastomeric Foam
• Construction: Closed Cell
• R-Value: R-13.5
• Thermal Conductivity: 0.237 to 0.252 Btu-in/hr-sq-ft-degrees F
• Temperature Rating: -297 to 257 degrees F
• Flame Spread Index: 25
• Smoke Developed Index: 50
• Water Absorption: 0.2 percent
• Water Vapor Permeability: 0.03 perm-in
• Color: Black
• Country of Origin: Domestic

Standard Information

• Brand: AEROFLEX
• Manufacturer Part Number: 634-ac58112