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Products > therma-cel Seam-Seal Descriptiontherma-cel® Seam-Seal is a self-sealing, flexible, polyolefin, thermal insulation and is black in color. It is available in wall thicknesses of 3/8", 1/2", 3/4" and 1", in sizes ranging from 3/8" CTS to 4" IPS. Applications
therma-cel® Seam-Seal has a low thermal conductivity and very low water vapor transmission rate. This low density product demonstrates excellent thermal, physical and chemical resistant properties and has a broad service temperature range between -330°F and 210°F (-201°C and 99°C). It can be installed in commercial, industrial and residential insulation projects. Acceptable for use with heat tracing/heat tape. Installationtherma-cel® Seam-Seal is pre-slit with factory applied pressure sensitive adhesive (PSA) to both seam surfaces and has convenient built-in release tabs for easy installation: slip on the tube, pull the tab, and pinch it shut. It can be easily pushed around P-traps and fittings, though mitering is recommended for complex joints. All butt joints should be sealed with 320 or 620 (black) Contact Adhesive or other approved sealing system. It is easily cut with a sharp knife. therma-cel® Seam-Seal is available in a wide range of I.D.s and is sized to fit over copper couplings and fittings. It should be installed on pipes that have been pre-tested for leaks, are not presently hot, and have application temperatures that will not exceed 210°F (99°C). Outdoor Applicationstherma-cel® Seam-Seal Pipe Insulation is made from UV resistant polyolefin resins. For severe UV exposure (rooftop applications) or where optimum performance is required, a protective coating (high quality exterior acrylic latex paint) should be applied. For high abuse areas, a protective jacketing (PVC) should be used. Coatings do not adhere well to polyolefin insulation. Refer to installation guidelines for specific instructions. UndergroundFor buried lines above the water table, use a clean fill such as sand (3"-5" layer) to protect therma-cel® Seam-Seal before backfilling. It is recommended to use a minimum 1" wall thickness and the materials to be buried are properly sealed at all seams and butt joints with an approved contact adhesive. For optimum performance, the lines should be encased in a conduit to protect them from problems associated with ground water. Refer to Technical Bulletin for temperature limitations and size recommendations. Note: All Nomaco Insulation products must always be installed above the water table. Resistance to Moisture Vapor FlowThe closed-cell structure and unique formulation of therma-cel® Seam-Seal effectively retards the flow of moisture vapor and is considered a low transmittance vapor retarder. For most indoor applications, therma-cel® Seam-Seal needs no additional protection. Additional vapor barrier protection may be necessary for therma-cel® Seam-Seal when installed on low temperature surfaces that are exposed to continuous high humidity. Flame and Smoke Ratingtherma-cel® Seam-Seal in wall thicknesses of 1" (25 mm) and below has a flame spread rating of 25 or less and a smoke development rating of 50 or less as tested by ASTM E 84 Method of Testing entitled: “Surface Burning Characteristics of Building Materials.” therma-cel® Seam-Seal is acceptable for use in duct/plenum applications meeting the requirements of NFPA 90A/90B. Numerical flammability ratings alone may not define the performance of products under actual fire conditions. They are provided only for use in the selection of products to meet limits specified, when compared to a known standard. Specification Compliance• ASTM C 1427, Type 1, Grade 1 |
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