General. Adhesives are recommended in some tasks to ensure and strengthen seals. The
following information describes their correct use and application.
Silicone Sealant. Silicone sealant (item 16, Appendix
F) is used
to seal parts against moisture.
Use the following instructions when applying:
Anytime a seal is broken, the part must be thoroughly cleaned to remove any remaining
sealing compound and dirt.
Thoroughly clean surface before applying sealant.
When applying sealant, ensure that the area is completely covered. Press sealant into and
around parts as necessary.
Silicone sealant will set in 15-30 minutes depending on temperature and humidity.
Loctite Adhesive. Loctite adhesive (item 1, Appendix
a seal against leakage and
resistance to loosening when used in the assembly of threaded, slip-fitted, or press-fitted parts.
Always use grade of Loctite adhesive specified and never use when other retaining means are
provided, such as lockwires, lockwashers, lockplates, and fasteners. DO NOT use Loctite adhesive
on brass fittings, plugs, or items that need frequent servicing, or when operating temperature
exceeds 300oF (149oC). Apply Loctite adhesive as follows:
Before application, clean threads to remove oil, grease, and metal chips.
Apply Loctite adhesive to second and third threads. DO NOT apply to first thread to ensure
Loctite adhesive will dry in 6-24 hours at room temperature.
Adjustments for elbows, gages, and valves can be made up to 24 hours after application
without affecting the seal.
The following are general practices regarding the use of tools:
Always use the proper tool kit and tools for the procedure being performed.
Ensure that tools are clean and lubricated to reduce wear and to prevent rust.
Keep track of tools. Do not be careless with them.
Return tools to toolbox when finished with repair or maintenance.
Return toolboxes and tools to tool storage when not in use.
Inventory tools before and after each use.
Some maintenance tasks may require special or fabricated tools. The "Initial Setup" of the
procedure will specify any special or fabricated tools needed to perform that procedure. Use these
special tools only for the maintenance procedures for which they are designed or called out. If you
are unfamiliar with a required tool, see your supervisor.