Anaerobic Adhesives
The anaerobic adhesive is an integral part of the entire machines' fastening system that will prevent all the screws, bolts, nuts and fasteners from dislodging during operation due to vibration or severe movement. Without the presence of air during the application process, it will allow the adhesive to set and cure at the specified time that yields high torque strength, able to resist most industrial chemicals, automotive oils, hydraulic fluids and high temperature,
Sonlok® anaerobic adhesives are designed and produced to fulfill the most demanding applications in the field of Automotive Assembly, Oil & Gas, Micro Motors Assembly, Valve & Pipe Sealings, Electrical Appliances and many more industries that require to lock, seal, gap-fill and bond all the metal fasteners and screws from loosening during operations.
Anaerobic adhesives fill the gaps between metal components in an assembly (for example, a nut and bolt assembly). It is because of this property that they are used to augment the seal or hold components of a mechanical assembly together - all these applications usually require high shear strength.
Sonlok® anaerobic adhesives part of Parson Adhesive Inc's product portfolio is one of the leading manufacturers for a wide range of high-quality adhesives for industrial engineering applications.
The types of Sonlok® range of anaerobic adhesives include:
- Thread Lockers
- Thread Sealants
- Gasketing Compounds
- Retaining Compounds
- Pipe Sealants
- High-Temperature Resistance
- Pre-Applied Thread Lockers
- Accelerators & Primers





Types of Anaerobic Adhesives
SONLOK®Thread Lockers
Sonlok® Thread Lockers is proven to be effective for securing and locking all types of ferrous and nonferrous screws and nuts. In the absence of moisture, it will react with the metal surface of the fasteners to provide a reliable and high torque strength adhesive that can resist most automotive oils, coolants, industrial lubricants and can withstand high temperature on a continuous basis.
SONLOK®Thread Sealants
Sonlok® Thread Sealants is designed for use as a replacement to PTFE sealing tape for its almost instant setting and excellent sealing properties. When fully set and cured, it can withstand pipe pressure up to 1000 psi and able to resist most industrial oils, hydraulic fluids, and gaseous matters. Sonlok® Thread Sealants can be applied to most pipe joints that are used in the Oil & Gas, LPG, Water and Sewerage piping industry as it provides outstanding sealing function and prevents leakages to the pipings.
SONLOK®
Gasketing Compounds
Sonlok® Gasketing Compounds is being applied widely and used as a flange sealant in the automotive, pumps, oils & gas and generators assembly and maintenance for its excellent sealing performance. Sonlok® Gasketing Compounds can replace traditional cork or pre-cut gaskets as it can be dispensed and applied directly to any shape and size of flanges. The cured sealant is able to resist most automotive oils, lubricants, chemicals and high-temperature resistance. The cured sealant is easy to remove for equipment maintenance.
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Retaining Compounds
Sonlok® Retaining Compounds is used mainly for its ability to bond and seal stainless steel shaft to bearings strongly, mostly used for different kind shaft bonding for the motors assembly. Based on anaerobic chemistry, the adhesive will provide a fast setting and high compressive strength when cured. It provides ease of use for assembly when other adhesives' chemistry do not meet the specifications when comes to shaft bonding. It can withstand high operating temperature, good resistance to most chemicals and has excellent compressive and bonding strength.
SONLOK® Pipe Sealants
SONLOK® 3555 Pipe Sealant and SONLOK 3290 weld sealant are excellent products of choice of fire protection professionals.
SONLOK® 3555 Pipe Sealant uses unique anaerobic technology with Teflon ® to prevent leaks in sprinkler systems. SONLOK 3555 Pipe sealant widely used in fabrication and installation to replace pipe dope and sealing tapes with durable and reliable seal.
SONLOK® 3555 sealant provides an instant seal of 1,000 psi and a cured seal that surpasses the burst rating of most of the pipes. Due to its unique Teflon ® filled technology and smooth nature, assembly will require less effort, and eliminate excess wear and tear on installers and equipment.
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High Temperature Resistance
Sonlok® High-Temperature Resistance anaerobic adhesives range is formulated to withstand high operating temperature up to 340°C continuously without any degradation. These high-performance anaerobic adhesives are well suited for applications that require fasteners to stay intact during operation and running at high temperatures. For use in high-speed motors, transformers, boilers, engines and transmission.