Nomaco DGS25838 Pipe Insulation Split 2-5/8 in 3/8 Wall

Product Description

The NOMACO DGS25838 is a split, closed-cell polyolefin/polyethylene pipe insulation tube designed for residential plumbing and heating applications. It measures 2-5/8 inches inner diameter with a 3/8-inch wall thickness and comes in a 6-foot length. The closed-cell structure limits moisture absorption and maintains thermal performance across a wide temperature range, from -297 degrees F minimum to 180 degrees F maximum. The split design allows installation over existing pipe runs without cutting or disconnecting lines. Licensed plumbing and HVAC technicians are the primary installers of this product type.

This pipe insulation is suited for domestic plumbing lines and residential heating systems. The 2-5/8-inch inner diameter is sized for 2-1/2-inch CTS pipe with a 2-5/8-inch OD. Its black color, flame spread rating of 25, and smoke rating of 50 meet commonly required fire and smoke standards for building installations. It is packaged 12 tubes per carton at approximately 9 pounds per carton, making it practical for multi-unit or whole-system installations.

Key Features

• Closed-cell polyolefin/polyethylene construction limits moisture ingress and maintains insulation value
• Split design enables installation over existing pipe without line disconnection
• Temperature rated from -297 degrees F to 180 degrees F for broad application coverage
• Flame spread rating of 25 and smoke rating of 50 per ASTM E 84
• Self-sealing feature streamlines installation and reduces the need for additional adhesive
• 12 tubes per carton at 9 pounds per carton for efficient jobsite handling

Compatibility

Sized for 2-1/2-inch CTS pipe with a 2-5/8-inch OD. Suitable for domestic plumbing lines and residential heating applications as stated by the manufacturer.

Installation Notes

Installation is typically performed by licensed plumbers or HVAC technicians. Before installing pipe insulation on any active line, shut off and depressurize the system and allow pipes to reach ambient temperature. Open the split seam, wrap around the pipe, and press the self-sealing edges together firmly for a secure closure. Follow all applicable local plumbing and mechanical codes, including ASTM C 1427 requirements referenced by the manufacturer.

Technical Specifications

• Material: Cellular polyolefin/polyethylene
• Color: Black
• Inner Diameter: 2-5/8 inches
• Wall Thickness: 3/8 inch
• Length: 6 feet
• Pipe Size Compatibility: 2-1/2 inch CTS, 2-5/8 inch OD
• Minimum Temperature Rating: -297 degrees F
• Maximum Temperature Rating: 180 degrees F
• Flame Spread Rating: 25
• Smoke Rating: 50
• Cell Structure: Closed cell
• Packaging Quantity: 12 tubes per carton
• Packaging Weight: 9 pounds per carton
• Applicable Standards: ASTM C 1427, ASTM C 177/ASTM C 518, ASTM E 96, ASTM E 84, MEA 6-02-M

Standard Information

• Brand: NOMACO
• Manufacturer Part Number: DGS25838