Sioux Chief 663 Self-Seal Closed-Cell Pipe Insulation, 7/8" ID x 1/2" Wall

Sioux Chief 663 Self-Seal Closed-Cell Pipe Insulation, 7/8" ID x 1/2" Wall

The Sioux Chief 663 is a self-seal closed-cell foam pipe insulation sized for 7/8" ID pipe with a 1/2" wall thickness, built for behind-the-wall and mechanical room rough-in work. This insulation is available in box lengths of 240 Feet and 306 Feet, with every box made up of manageable 6-foot sections so crews can cover both shorter and longer rough-in runs without excess waste. Plumbers and contractors use the 663 to wrap copper, CPVC, and other rough-in tubing runs to cut down on condensation, reduce heat loss, and quiet pipe noise inside walls, chases, and mechanical rooms. The closed-cell, non-porous foam construction is built to outperform open-cell foam rubber insulation in moisture resistance and long-term thermal performance, making it a practical choice for jobs where sweating copper lines or noisy supply runs are a concern.

Key Features

• Trade Size: Sized for 7/8" ID pipe with a 1/2" wall thickness, matched to common rough-in copper and tubing runs.
• Available Lengths: Offered in 240 Feet and 306 Feet box quantities, each shipped as a run of 6-foot lengths so you can match coverage to the job.
• Material: Closed-cell foam construction is non-porous, giving better long-term performance than traditional foam rubber insulation.
• Self-Seal Design: Peel-off adhesive liner removes easily for a quick, clean seal along the insulation seam during installation.
• Performance Benefits: Reduces noise, condensation, and heat-loss on pipe runs behind walls and in mechanical spaces.
• Packaging: Each box is built from 6' lengths, letting crews select the 240 Feet or 306 Feet option that best covers a given rough-in run without excess waste.
• Country of Origin: Manufactured in the United States.

Technical Specifications

• Country of Origin: USA
• Trade Size: 7/8" ID x 1/2" Wall
• Available Box Lengths: 240 Feet or 306 Feet, shipped in 6' lengths
• Packaging: 1 BX

Typical Applications

• Residential and Commercial Rough-In Plumbing
• Insulating Copper and Tubing Supply Runs
• Condensation Control on Pipe Runs in Mechanical Rooms
• Noise Reduction for Supply Lines Behind Walls
• Renovation and New Construction Rough-In

Why Sioux Chief?

Sioux Chief builds the 663 self-seal pipe insulation from closed-cell, non-porous foam with an easy-release adhesive liner so plumbers can wrap runs quickly without sacrificing long-term performance against condensation and heat loss. Offered in 240 Feet and 306 Feet box lengths made from manageable 6-foot sections and manufactured in the United States, it's a straightforward, job-ready material for rough-in crews insulating supply lines behind walls and in mechanical spaces, letting contractors choose the coverage length that best fits each project.