Harvey Thread Sealing PTFE Plumbers Tape 1/2 In. X 260 In. Plumbers Tape Product Description Harvey PTFE Thread Seal Tape is an economy-grade, low-density tape for use on a wide range of threaded pipes. Made with virgin white PTFE construction for long lasting durability. It is non-flammable and safe for use on potable water applications. For more than 75 years, Harvey has offered a wide variety of plumbing supplies for residential and commercial applications. Features All-purpose plumbers tape tightly seals threaded pipe Made with virgin white PTFE construction for longevity For plastic, brass, copper, aluminum and iron piping Clean, positive seal on threaded connections Enables easy disassembly of joints Economy grade, low density tape Not for use with lines carrying oxygen Nonflammable material Meets Federal Specification T-27730A