The Permatex Threadlocker, part number 09978 or 9978, is a chemical fastening compound used to secure threaded hardware against loosening from vibration and thermal cycling - common concerns in heavy-duty truck and drivetrain applications. Permatex is a recognized name in thread-locking and sealing compounds throughout the commercial vehicle and fleet maintenance industries. Pro Gear and Transmission carries this part directly. Call us to confirm proper fit or application before ordering.
Features
Permatex brand threadlocker, part number 09978 or 9978
Designed to secure threaded fasteners against vibration-induced loosening
Suited for heavy-duty truck, fleet, and drivetrain maintenance applications
Sold by Pro Gear and Transmission
