Features: Insul-Lock® Self Seal 6'L, 1/2" Wall Thickness, 1-5/8" Nom.I.D.This superior closed cell insulation is designed to retard heat flow and prevent condensation when properly installedINSUL-LOCK® Seam-Seal pipe insulation is pre-slit with a factory applied specially formulated bonding adhesive applied to both seam surfaces and comes with convenient built-in release liners which allow for easy installationIdeal for applications such as refrigerant lines, cold water plumbing, roof drains and chilled water systemsINSUL-LOCK® Seam-Seal pipe insulation is made from a UV resistant elastomeric blendFor moderate UV exposure, no additional protective coating neededHowever, for severe UV exposure (rooftop applications) or where optimum performance is required, 374 Protective Coating or approved jacketing or cladding should be usedSPECIFICATION COMPLIANCEASTM C 534 Type 1 (Tubing), Grade 1 ASTM D 1056-00-2C1 New York City MEA 186-86-M VolIV USDA RequirementsUL 94-5V Flammability Classification (Recognition No.E300774) ASTM E 84 1-1/2" 25/50-tested according to UL 723 and NFPA 255 Complies with requirements of CAN/ULC S102-03FMRC Approval Guide Chapter 14 Pipe InsulationMeets requirements of NFPA 90A Sect2.3.3 for Supplementary Materials for Air Distribution SystemsMeets requirements of ASTM C 411 (Test Method for Hot Surface Performance of High Temperature Thermal Insulation)Meets requirements of UL 181 sections 11.0 and 16.0 (Mold Growth/Air Erosion)., Lot of 1