Pyrogel  is a broad temperature range couplant for thickness gauging, flow metering, acoustic emissions testing and flaw detection/sizing. These products contain no polymers and resists drying, making them an excellent choice for long term flow metering applications.

Pyrogel comes in two different viscosities, Pyrogel 7 which is a very thin, flowable liquid and Pyrogel 100 which is a thick gel. Pyrogel 7 recommended temperature range is -50 to 730°F / -45 to 388°C. Pyrogel 100 recommended temperature range is -50 to 805°F / -45 to 429°C.