Product Description
Exxon BEACON 325 is a high performance grease specifically formulated for the
lubrication of precision equipment operating at moderate and low temperatures.
It is made with a synthetic base oil of extremely low viscosity and low
volatility plus a lithium soap. BEACON 325 is characterised by good mechanical
stability, a high degree of resistance to water and extremely high oxidation
stability. As its base oil viscosity is low and the viscosity index of the
fluid is high, the grease has excellent low temperature properties including
low starting and running torque at very cold temperatures and good pumpability.
BEACON 325 provides excellent service in a wide variety of small bearings and
small, lightly loaded gears that operate over a wide temperature range. Its
long lubrication life and excellent oxidation stability well suit it for use
as a bearing lubricant in sealed-for-life units in automotive, aircraft and
industrial applications. The recommended application temperature range for
continuous operation for BEACON 325 is -50º C to120º C.
Features and Benefits
BEACON 325 is a member of the Exxon brand of lubricating products recognized
for their high quality and reliability, as well as performance capabilities.
As with other Exxon greases, this product is manufactured to the strictest
quality standards. A key feature of BEACON 325 is its use of a synthetic fluid
to provide optimum performance for low temperature precision applications.
BEACON 325 offers the following quality features:
- Special synthetic base oil provides excellent low-torque and low temperature properties
- Excellent oxidation stability for extended grease life needed for filled for life applications
- Very good water resistance ensures proper lubrication even in the presence of incidental water contamination
- Low volatility base oil permits operation at moderate to high temperature without fluid evaporation
Applications
Application notes: BEACON 325 is formulated with an organic ester synthetic
oil. This synthetic oil may cause a softening or swelling of certain plastics,
elastomers, paints, or varnishes. How serious the softening or swelling
tendency may be depends also on the temperature and the period of contact.
Contact your local Exxon representative for further information on materials
compatibility.
BEACON 325 provides excellent service in a wide variety of small bearings and
lightly loaded gears that operate over a wide temperature range, including
such applications as:
- Naval, marine, and aircraft instruments and control mechanisms
- Geared limit switches in Limitorque valve actuators
- Commercial and military electronic equipment
- Sealed for life motors, generators, and similar equipment in automotive, aviation and industrial applications
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Typical Properties

| 
Beacon 325
|
| NLGI Grade | 2 |
| Thickener Type | Lithium |
| Color, Visual | Tan |
| Penetration, Worked, 25º C, ASTM D 217 | 285 |
| Dropping Point, ºC, ASTM D 2265 | 180 |
| Viscosity of Oil, ASTM D 445 cSt @ 40º C | 12 |
| Apparent Viscosity, ASTM D 1092 | |
| @ 20sec-1 and -40º C, Poise | 7,000 |
| @ 50sec-1 and -40º C, Poise | 3,500 |
| Oil Separation, FTMS 791B321.3, 30 hrs @ 100º C, mass % | 4 |
| Corrosion Prevention, ASTM D 1743 | Pass |
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Health and Safety
Based on available information, this product is not expected to produce
adverse effects on health when used for the intended application and the
recommendations provided in the Material Safety Data Sheet (MSDS) are
followed. MSDS's are available upon request through your sales contract
office, or via the Internet. This product should not be used for purposes
other than its intended use. If disposing of used product, take care to
protect the environment.
The Exxon (Esso) logotype, the Running Tiger are trademarks of Exxon Mobil Corporation, or one of its subsidiaries.
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