Aeroflex ac3812 Epdm Tube Insulation 3/8 in Id 1/2 in Wall

Product Description

The AEROFLEX ac3812 is a flexible, closed-cell EPDM elastomeric tube insulation designed for insulating liquid cooling and heating lines in mechanical systems. With a 3/8 inch inner diameter and a 1/2 inch wall thickness, it fits 3/8 inch OD tubing. The closed-cell structure limits moisture vapor transmission to 0.03 and delivers a thermal conductivity of 0.245, both tested values rather than theoretical calculations. Lightweight and easy to handle, this insulation is well suited for HVAC, refrigeration, and plumbing applications where reliable thermal and moisture performance is required.

The ac3812 is appropriate for residential and commercial mechanical systems including air conditioning lines, chilled water piping, refrigeration suction lines, and domestic hot and cold water lines. It is commonly installed by HVAC technicians, refrigeration mechanics, and plumbers during new construction or retrofit work. Its EPDM rubber composition provides UV resistance, making it suitable for both indoor and outdoor exposed piping runs.

Key Features

• Closed-cell EPDM construction limits moisture vapor transmission to 0.03
• Thermal conductivity of 0.245 based on tested values, not theoretical calculations
• Flame spread rating of 25 or less and smoke developed rating of 50 or less per ASTM E 84
• UV resistant for indoor and outdoor installations
• Fits 3/8 inch OD tubing with 3/8 inch ID and 1/2 inch wall thickness
• Flexible and lightweight for easy field installation and routing

Compatibility

Designed for use on 3/8 inch OD tubing in HVAC, air conditioning, refrigeration, and plumbing piping systems requiring closed-cell elastomeric tube insulation.

Installation Notes

Installation is typically performed by licensed HVAC technicians, refrigeration mechanics, or plumbers. Isolate and de-energize the associated system before installing or replacing pipe insulation on active lines. Butt joints and seams should be fully sealed with compatible elastomeric insulation adhesive to maintain the vapor barrier. Follow local mechanical codes and manufacturer adhesive guidelines for exterior or high-humidity applications.

Technical Specifications

• Inner Diameter: 3/8 inches
• Wall Thickness: 1/2 inch
• Fits Tubing OD: 3/8 inches
• Material: EPDM Elastomeric Rubber
• Cell Structure: Closed-cell
• Thermal Conductivity: 0.245
• Water Vapor Transmission: 0.03
• Flame Spread Rating: 25 or less (ASTM E 84)
• Smoke Developed Rating: 50 or less (ASTM E 84)
• UV Resistant: Yes

Standard Information

• Brand: AEROFLEX
• Manufacturer Part Number: ac3812