PRECISIONTAPE ™ is made from a very tightly woven fiberglass cloth that has been heavily coated with PTFE (polytetrafluoroethylene) – based fluoropolymer resin and has a high adhesion acrylic adhesive applied to one side. The combination of PTFE and its well known properties, the excellent strength and dimensional stability of the fiberglass, and has twice the bonding strength of silicone adhesive with a maximum 275°F or 135°C.