Tubolit Self-Seal is a 25/50-rated flexible black polyethylene pipe insulation for saving energy while reducing noises. Particularly effective for cost-efficient thermal insulation of domestic heating and plumbing lines. It is available pre-glued on both sides of the seam in the most frequently specified pipe sizes and thicknesses. Tubolit SS is expanded without the use of CFCs or HCFCs. Recommended for use on lines operating from 0°F (-17°C) to 180°F (82°C). It effectively reduces heat loss on hot-water plumbing and heat gain on cold-water plumbing systems.