Thread Lockers

Thread lockers are specialized anaerobic adhesives engineered to secure screws, bolts, nuts, and threaded fasteners against loosening caused by vibration, shock, and continuous mechanical movement. These adhesives cure in the absence of air when confined between metal threads, forming a durable bond that delivers high torque retention and excellent shear strength. Once cured, thread lockers provide reliable resistance to industrial chemicals, automotive oils, hydraulic fluids, and elevated temperatures, ensuring long-term performance in demanding environments. Sonlok® thread lockers, part of the industrial adhesive portfolio from Parson Adhesives Inc, are designed for critical applications across automotive assembly, oil and gas, valve and pipe sealing, micro motor assembly, and electrical equipment—locking, sealing, and gap-filling threaded components to maintain assembly integrity and operational reliability.