Cap Screws and Pipe Threads
Fill the first 2 to 3 leading threads in area of engagement
with compound. For large quantities of cap screws, may
Apply by hand to individual studs. Fill full length of
thread with one strip on diameters up to 25 mm (1 inch),
two strips 180° apart on diameters up to 50 mm (2
inches), and three strips 120°
apart on diameters over 50
mm (2 inches). In all cases apply one strip into tapped
Blind hole applications - apply enough compound to fill
the bottom 2 to 3 threads of engagement, then insert
stud. If engagement length exceeds one diameter use
proportionally more compound.
For non-seated studs (studs that can go deeper in hole
than required) turn stud one turn deeper than required.
After bubbling stops, apply a ring of compound around
stud at top of hole, then turn back to required height.
Face Sealant (Plastic Gasket)
Spread an even coat 1 cc per 260 cm2 (40 sq. inches)
on one of the mating surfaces. Assemble and tighten
NOTE: On crawler tractor applications only, when
compound is used as a gasket, bolts which attach
the parts should be coated with MPL (gear lubricant)
to prevent compound from sticking to bolts.
APPLICATION AT LOW TEMPERATURES
1. Without special precautions, these compounds can
be applied and will cure at temperatures down to 10°C
(50°F), and at that temperature full strength will be
obtained within 72 hours.
2. At temperatures from 10°
to -18°C (50° to 0°F), the
use of primer is recommended.
3. If necessary, the compounds can be applied at
temperatures below -180C (0°F), only if heat is used to
accelerate the cure as follows:
65°C (150°F) for 60 minutes
93°C (200°F) for 45 minutes
120°C (250°F) for 30 minutes
SETTING TIME (BEFORE PLACING IN OPERATION)
1. Normal time for compound grades without use of any
primer - 6 to 24 hours at room temperature with
machined carbon steel parts. Higher temperatures will
accelerate cure and lower temperatures will retard cure.
Other base metals will provide more or less catalytic
effect on cure.
2. Primed surfaces - 2 to 6 hours. This may be speeded
by pretreating mating surfaces with special primers.
Some metals (such as zinc and cadmium plate, anodized
aluminum, and passivated stainless steel) are inactive
and require heat or primer to cure the compound.
3. A fast curing type primer will fix parts for normal
handling in 10 to 15 minutes and will achieve 75 percent
of ultimate strength in 1 hour and full cure in 2 to 4 hours.
Parts difficult to remove can be preheated to 205° to
260°C (400° to 500°F) prior to
PRINTED IN UNITED STATES OF AMERICA