Discontinuation Soon - Inventory Low Contact Us for Current Stock or Potential Replacement, Substitute or Cross-Over - Scotch Thread Sealant and Lubricant 48 is a white unfused plastic film made of polytetrafluoroethylene (PTFE). This fluorocarbon resin film tape designed to provide a leak resistance seal when used as a pipe thread sealant. 1/2" x 260" in box. 7000005819 - 00054007061953