Echo 8 HT is a high temperature slow-drying, fluid ultrasonic couplant with an excellent safety profile and is compatible with all metals and most plastics.
Covers a broad range of ultrasonic flaw and thickness gaging applications and leaves minimal residue. Pumps easily in automated systems and is an excellent lubricant. Provides excellent corrosion inhibition on ferrous metals and is compatible with all metals and most plastics. Has a low toxicity and is essentially non-irritating.
Operating Range: -50° to 800°F (-45° to 425°C)
Sound Velocity: 4900 ft/second (1494 m/sec)
Grade #1 ~ 100 cST
Grade #4 ~ 400 cST (Standard)
Grade #10 ~ 5,000 cST
Halogens & Sulfur: Less than 50 ppm
Specific Gravity: 1.07
Weight/Gallon: 8.91 pounds / 4.04 kb net