LOCTITE® 516™ is a high viscosity, non-toxic, thixotropic, pre-applied, water-based thread sealant for automatic dispensing applications. When dried, it becomes a resilient, tight clinging, non-curing sealant for tapered or straight threads. LOCTITE® 516™ provides positive sealing and resistance to vibrational loosening. It is ideal for use on sealing applications, particularly where re-adjustments are required.

Product Advantages

  • Seals pipe threads for immediate use
  • Locks straight threads by resisting thread movement
  • Can be easily seen and inspected
  • Does not contaminate from shredding and washout
  • Provides lubrication for assembly
  • Seals against leakage of automotive lubricants, fuels and coolants under normal temperature
  • Dry and tack-free coating
  • Can be shipped on parts for field service
  • Ready for assembly, save application labor and mess on the line


Technical Data

Property Description
Color Brown
Application General sealing application/Low viscosity
Temperature (℃) -54℃~150℃
Sealant after assembly Seals immediate after assembly
Sealing ability(psi) NPT : 120
Lubricity High
Shelf life 4 years at room temperature (8~28℃)                                     
*on 3/8”-16UNC bolt
**on 1/2” NPT

Industrial Specifications and Standards

Company Specification Company Specification
General Motors 9985473 Ford Motor WSL-M4G328-A2 L752A


LOCTITE® is the registered trademark of HENKEL Germany.Dri-Loc® Vibra-Seal® Dri-Seal® are the registered trademark of HENKEL Corporation.