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 PULLING
COMPOUNDS
Recommendations
of pulling compounds are based on two factors: first, that they
act as lubricants to reduce the coefficient of friction between
the cable and duct surfaces and; second, that they contain no ingredients
which will attack the cable materials.
There are literally
dozens of pulling compounds on the market which meet the first criterion
of lubricity. However, many of these contain chemicals which, with
time and at operating temperatures, will attack many of the commonly
used jacket and insulation materials. The effect of the attack may
be the degradation of either physical or electrical properties or
both. Physically, the attacked material may become swollen, or embrittled,
or suffer reduction in tensile strength, elongation, and thermal-environmental
stress crack resistance. Electrically, the insulation resistance
may fall to unacceptable levels, or the dielectric losses may increase
to prohibitive levels.
The following
ready-to-use pulling compounds may be used with all Kerite cables.
1. Polywater
"A", "G", "J" or "WJ" lubricants (Polywater Corp.): "A" is general
purpose summer grade. "G" is a water based gel lubricant for hands-on
application of heavy coating and is a summer grade. "J" and "WJ"
are water based gel lubricants suitable for use down to -10°F (-23°C).
2. Plymouth/Bishop
No. 45 Cable Pulling Lubricant (Plymouth Rubber Co.) is summer grade
material limited to use at temperatures above freezing.
3. MacLube
No. CA-51 (Mac Products, Inc.) is a winter grade lubricant suitable
for use at all temperatures down to 0°F (-18°C).
4. Minerallac
H-2B (Minerallac Electric Co.) is a summer grade lubricant, limited
to use at temperatures above freezing.
5. Winter
grade No. 7437-PC, (General Machine Products Co.) is a winter grade
lubricant suitable for use at all temperatures down to 0°F (-18°C).
6. Gel-Lube
7/5 (Cable Associates, Inc.) is a winter grade lubricant suitable
for use down to 0°F (-18°C).
7. Slip
X-300 compound (American Cable Colloid Co.) winter grade compound
suitable for use at all temperatures down to 0°F (-18°C).
8. Aqua-Gel
II (Ideal Industries, Inc.) is a summer grade lubricant limited
to use at temperatures above freezing.
9. Aqua-Gel
CW (Ideal Industries, Inc.) is a winter grade lubricant suitable
for use at all temperatures down to -25°F (-32°C).
Inasmuch as
the Kerite Company has no control over the manufacture or use of
these compounds, it assumes no liability for same.
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