Ultragel II is an industry-leading, high performance, ultrasonic couplant for flaw detection and sizing, thickness gauging, flow metering and acoustic emission testing. Ultragel II is widely recognized as the industry's most dependable and popular ultrasonic couplant. This general purpose medium viscosity gel is known for its outstanding performance, excellent corrosion protection, thixotropic properties and comprehensive range of specifications and approvals. Ultragel II is Pratt and Whitney approved and meets nuclear grade specifications for halogen and sulfur levels.