Echo775 is a high viscosity paste couplant containing a polymer with a higher melting point.
Operating Range: 600° to 700°F (316° to 371°C)
Auto-ignition Temperature: 770°F (410°C)
Echo700 and Echo760 contain a polymer which melts (and begins to smoke) at 600°F (316°C), the polymer in Echo775 melts at 700°F (371°C)
If you are testing below 775°F, HiTempco is the ideal broad temperature couplant with an operating range of -50° to 775°F.
If you are testing above 775°F, EchoTherm and EchoTherm Extreme are the only couplants with operating ranges up to 1000°F and 1250°F respectively.