Armacell ARMA-BST07812 Pipe Insulation 7/8 in Id 1/2 in Wall

Product Description

The ARMACELL ARMA-BST07812 is a flexible closed-cell elastomeric pipe insulation tube featuring a factory-applied Lapseal self-sealing lap. Each stick measures 7/8 inch inner diameter with a 1/2 inch wall thickness and 6 feet in length. The Lapseal design eliminates the need for separate adhesive at the longitudinal seam, speeding up installation on refrigerant suction lines, chilled water piping, and other cold-service applications. Sold in carton quantities of 210 linear feet, this product is suited for commercial and residential mechanical insulation work performed by HVAC technicians and pipefitters.

This insulation is applied to copper and compatible tubing on chilled water systems, refrigerant lines, and condensate drain lines where condensation control and thermal efficiency are required. The 7/8 inch ID accommodates standard 3/4 inch copper tube OD. The 1/2 inch wall provides meaningful resistance to heat gain and condensation formation in typical HVAC and refrigeration installations. Carton packaging at 210 linear feet suits commercial jobs and multi-unit residential projects where larger quantities reduce handling time.

Key Features

• Lapseal self-sealing longitudinal seam eliminates separate adhesive application at the joint
• 7/8 inch inner diameter fits standard 3/4 inch copper tube OD
• 1/2 inch wall thickness for condensation control on cold-service piping
• 6-foot stick length for straightforward handling and cutting
• 210 linear feet per carton reduces material handling on larger jobs
• Manufactured in the United States

Compatibility

Designed as an OEM-style flexible elastomeric tube insulation for cold-service piping applications including refrigerant suction lines and chilled water piping where 7/8 inch inner diameter tubing insulation is specified.

Installation Notes

Installation is typically performed by licensed HVAC technicians or pipefitters following ASHRAE and local mechanical code requirements for pipe insulation. Shut down and de-pressurize the piping system before applying insulation where required by site safety procedures. The Lapseal seam should be pressed firmly and evenly along the full length of each stick to ensure a continuous seal. Butt joints between sticks and all end cuts should be sealed with compatible Armaflex contact adhesive per standard closed-cell insulation installation practice.

Technical Specifications

• Inner Diameter: 7/8 inch
• Wall Thickness: 1/2 inch
• Stick Length: 6 feet
• Carton Quantity: 210 linear feet
• Seam Type: Lapseal self-sealing
• Country of Origin: United States

Standard Information

• Brand: ARMACELL
• Manufacturer Part Number: ARMA-BST07812