Using Loctite® Adhesive
Chapter 4: Procedures
4 - 2 Affinity® Four Birthing Bed Service Manual (195826 REV 2)
USING LOCTITE® ADHESIVE
The proper use of Loctite® retaining compounds during service is essential to enable certain fasteners to
be correctly retained.
The Loctite® adhesive/sealant retaining compounds, are anaerobic, single-component resins supplied
as a liquid. These resins remain in a liquid state in the presence of air, but harden into insoluble plastic
film solids when confined between clean, close-fitting metal surfaces. They can be used in conjunction
with natural rubber, glass, ceramics, and thermosetting plastic surfaces, such as phenolic and polyester.
Also, they do not usually harm nylon, polyethylene, or saran. However, in their liquid state, they
sometimes soften or craze vinyl, cellulosic, styrene, methacrylate plastic, such as Plexiglas®, and
varnished finishes. Cured resins do not affect any of these materials. It is important to make a note of
that an opened bottle of these products has a definite shelf-life of about 6 months, which affects its
serviceability.
The resins referred to within this manual usually cure to their hardened state on metal parts without
need of primers. However, the use of a recommended primer will help degrease the part and leave a
light deposit of a catalyst to speed curing. The temperature of the parts also affects their cure time. At
40F (4C) it may take weeks to cure, but at 75F (24C), parts cure within the time length shown on
the bottle.
Use primers with adequate ventilation. Avoid skin contact and prolonged or repeated breathing of
vapors. Do not allow primers to be trapped under rings, watch bands, etc. Observe all directions on the
primer can. Failure to do so could cause personal injury.
When using the product recommended during the service procedure:
1. Disassemble the parts, remove the old Loctite®, and clean the parts. Reapply the new Loctite®
during reassembly.
2. Apply to clean surfaces only. If necessary, degrease the parts.
3. Use liquid sparingly (usually one or two drops on threaded fasteners). Be sure to apply where thread
engagement begins.
4. Assemble the parts and allow them to cure. Observe the time stated on bottle label before placing
back into service.
Avoid skin contact with the Loctite® accelerator, primer, or adhesive. Skin contact with the Loctite®
accelerator, primer, or adhesive could cause personal injury.
If difficulty is experienced in removal or disassembly of a part with Loctite® #262 or #271 applied,
heating the screw, bolt, nut, etc. aids in its removal.
PURPLE LOCTITE® ADHESIVE #222 (P/N SA4842)
Typical usage is as a low strength adhesive for screws. It is also suitable for sealing threads, fittings, and
cylindrical parts. It normally cures in 2 to 6 hours at 75F (24C) and permits disassembly under
condition of maximum thread engagement.
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