Harvey 17165-144 Thread Seal Tape, 1296 in L, 1/2 in W, PTFE, Blue/White

0.4 density, 0.003 in thick. Over 50% elongation and chemically inert. Provides a strong tight seal for any threaded joint and permits easy disassembly. Tolerates -400 to 500 deg F. Non-toxic and non-flammable. Meets Federal Specification T-27730A.