Has anyone used these type connectors?

69_340_GTS said
Operating Temperature: -67°F-257°F
Fully Recovered Temp: 266°F
Temp of Solder Starting Melt: 257°F
Temp of Full Solder Melt: 302°F
Voltage Resistance: >600V

Oh yeah. That helped. NOT. Operating temperature is obvious. WTF is fully recovered?