Shurtape PC-600 has a waterproof backing and good handling characteristics (does not twist or curl during application). Applications for Shurtape PC600 Duct Tape include: industrial, carpet, plumbing, HVAC, sealing, waterproofing, patching, and asbestos applications. PC-600 is currently offered in 14 stock colors; also please note Shurtape’s version of olive drab is very dark as displayed in the product photo