Contains PTFE particles for greater sealing power Model # 86823 Features: Accurate, fast, low-cost method for measuring surftemperatures Ideal for applications such as annealing, forging, welding, bending, forming Initially the mark appears dull and chalky then quickly melts to a transparent-appearing liquid Accurate to within +/- 1 percent of rated temperature 33 Percent bigger and stronger; same proven reliability.
