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Mobiltac 325 NC

Mobiltac 325 NC

Gear Oil

Product Description

Mobiltac 325 NC is an extra high performance non-leaded, diluent-type, heavy-bodied open gear lubricant designed for a wide variety of open gear and mining applications. It contains a non-chlorinated, volatile solvent that ensures fluidity during application, even at low temperatures. Once applied, the diluent evaporates and the lubricant takes on a flexible, adhesive, high-strength consistency that is maintained throughout its service life. Mobiltac 325 NC adheres strongly to gear teeth and other machine elements to resist excessive throw-off, thereby providing a wear-resistant, viscous, continuous film that lubricates well under boundary conditions.

Mobiltac 325 NC will not harden, chip, or flake in cold weather, is self-healing, and does not form a hard-packed buildup in gear-tooth roots. Dripping and throw-off are minimal, and the lubricant is easily cleaned up with a solvent-soaked rag. The lubricant provides resistance to rain, snow, and process water washing. Its flash points minimise the risk of fire. This new generation gear and mining lubricant is applied easily by hand or by automatic dispensers. Mobiltac NC technology has rapidly become a firm favorite among many open gear users and mine operators around the world

Features and Benefits

The Mobiltac NC Series of products are the most recent technology advance for the Mobiltac brand of products that have been used with great success in open gear and other mining applications for several decades. These new technology products provide significantly improved environmental and performance benefits over older diluent-type technologies. They offer the following features and potential benefits:

Features Advantages and Potential Benefits
Excellent protection of gear teeth and other machine elements under boundary lubrication conditions Less equipment wear and breakdown; lower replacement, downtime and maintenance costs
Excellent low-temperature pumpability Easy start-up at low ambient and avoids cost of preheating
Excellent resistance to water washing Maintains superb protection in wet environments; less unanticipated downtime
Minimal throw-off and dripping Less product waste and new product cost
No chipping or flaking at low temperatures Maintains protective lubricating film at low temperatures
Easy to clean up with rags and conventional solvents or cleaning fluids Improved safety and reduced maintenance costs


Mobiltac 325 NC is designed for use in a wide variety of open gear and mining applications:

  • Mobiltac 325 NC is recommended for the same applications as Mobiltac 375 NC. It contains more diluent and has a lower viscosity for ease of application at cooler temperatures
  • Minimum operating temperature for Mobiltac 325 NC is -18 C
Mobiltac NC Mobiltac325 NC
Appearance Viscous, semi-fluid, black
Viscosity, ASTM D 445  
cSt @ 40 C, with diluent 1500
cSt @ 100 C, without diluent 1000
Flash Point, C, ASTM D 92 110
Specific Gravity, C kg/l, ASTM D 1298 0.95
Maximum Temperature Use, C 93

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.

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