Mobil Glygoyle™ GC Series

Mobil industrial , 中国

High Performance PAG Lubricant

Product Description

Mobil Glygoyle™ GC Series oils are polyalkylene glycol-based (PAG) high performance lubricants that provide outstanding lubrication in extreme-temperature compressor, gear and bearing system applications in conditions well beyond the capabilities of mineral oils. They are shear-stable and have outstanding resistance to thermal degradation, oxidation and the formation of sludge and deposits.

Mobil Glygoyle GC Series oils have very high viscosity indexes and being wax-free, they have extremely low pour points. Their coefficients of friction and traction are lower than mineral oils. These exceptional lubricity characteristics help resulting in reduced power consumption and lower operating temperatures in many applications.

Features and Benefits

The Mobil Glygoyle GC Series oils are formulated with specially chosen polyalkylene glycol base oils and demonstrate the continuing commitment to using advanced technology to provide outstanding product performance.

Mobil Glygoyle GC were primarily designed to meet the critical high temperature needs of a variety of industrial equipment where mineral oil-based and other synthetic products were not able to perform satisfactorily. Additional features such as low friction and traction, gas absorption properties resulted in even broader industrial application opportunities. Mobil Glygoyle GC Series lubricants offer the following features and potential benefits:

Features	Advantages and Potential Benefits
Reduced absorption and viscosity reduction with pressurised hydrocarbon gases, and outstanding foam resistance ability.	Improved film protection and long life for natural gas compressors Reduced the compressor oil consumption when the compressor is working.
Superb thermal and oxidative stability, and resistance to sludge and deposit formation.	Extended lubricant life, increased production, less scheduled and unscheduled downtime. Lower maintenance costs and replacement expenditures.
Low coefficients of traction and friction.	Reduced operating temperatures, greater equipment efficiency, and potential for reduced power consumption and long seal life. Minimizes effects of micro slip in rolling contact bearings for longer element life potential.
Excellent low-temperature fluidity with low pour points and high viscosity index.	Enables quicker warm-up at low ambient temperature resulting in reduced power consumption and smoother running.
Reduced gear tooth wear at high temperatures for both steel-on-steel and steel-on-bronze metallurgies.	Reduced operating costs due to less wear, reduced operating temperature and smoother running.
Multipurpose industrial equipment capability.	Potential to use fewer products with reduced inventory costs and less chance for mis-lubrication.

Applications

Mobil Glygoyle GC series are used in a wide range of industrial applications, especially gas compressors, industrial enclosed gearbox, as well as bearing circulation lubrication. Specific applications include:
- Gas compression include reciprocation and screw compressors to process propane gas, natural gas, CO2 and other process gasses
- Industrial enclosed gears include spur and worm gear
- Rolling bearing
- Severe plastic calendar operations

Application notes
Polyalkylene Glycol-based (PAG) lubricants have some inherent excellent lubrication properties imparted by the PAG base oil. However, PAG based lubricants do have limitations with respect to compatibility with seal and coating materials, some varieties of light metal alloys and other lubricants. Before applying any PAG lubricant, contact the original equipment manufacturer for specific advice on the application.
Compatibility with other lubricants

Mobil Glygoyle GC series are not compatible with mineral oils and most other synthetic lubricants. Additionally, depending on the specific type of PAG base fluid, they may not be compatible with other PAG type lubricants. When changing from mineral oil or other synthetic products to Mobil Glygoyle products, it is critical to clean the system thoroughly and flush with suitable fluids prior to conversion. For further details please contact your ExxonMobil representative.

Water
Mobil Glygoyle GC series, along with all PAG based lubricants, are hygroscopic and absorb more water than mineral oils or synthetic hydrocarbons before. Therefore extra care should be taken not to expose PAG oils to excessive moisture.

Seal compatibility
PAG based lubricants are not compatible with most standard seal materials used for mineral oils or synthetic hydrocarbons. Incompatible materials are likely to shrink or swell, thus causing severe leakage or seizure of the seal. When converting from mineral oil or synthetic hydrocarbons to Mobil Glygoyle GC series, seal compatibility must be considered. NBR materials may be used but have restricted temperature range. In all cases, operating conditions and the variability of elastomer properties from different manufactures should be considered. For best results, consult the equipment supplier or seal manufacturer for specific recommendations

Light Metal Alloys
Mobil Glygoyle GC series and PAG lubricants are well suited for gear applications with ferrous and most non ferrous materials. However, Mobil Glygoyle products and PAG lubricants are not recommended for use with light metal alloys containing Aluminum or Magnesium. PAG lubricants can lead to increased wear when used with light metal alloys of this nature. Please consult the original equipment manufacturer for additional information.

Other Materials
Paints, coatings, and some plastics are not suitable for use with PAG lubricants. In general two component paints (reactive paints, epoxy resins) are suitable for use for interior coatings in contact with the lubricant. Otherwise, interiors in contact with the lubricant should be left uncoated. Materials used for oil level gages, inspection doors etc., should preferably be made of natural glass or polyamide materials. Other transparent plastics, e.g. Plexiglas, may deteriorate and crack under stress.

Properties and Specifications

Property	MOBIL GLYGOYLE GC 150	MOBIL GLYGOYLE GC 220
Grade	ISO VG 150	ISO VG 220
Copper Strip Corrosion, 3 h, 100 C, ASTM D130 mod	1	1
Density @ 15 C, kg/l, ASTM D4052	1.000	1.000
Flash Point, Cleveland Open Cup, °C, ASTM D92	231	231
Foam, Sequence I, Stability, ml, ASTM D892	0	0
Foam, Sequence I, Tendency, ml, ASTM D892	0	0
Kinematic Viscosity 40C, mm²/s, ASTM D7042	140	220
Kinematic Viscosity, 100°C, mm²/s, ASTM D7042	23.8	36.2
Pour Point, °C, ASTM D97	-40	-40
Rust Characteristics, Procedure A, ASTM D665	Pass	Pass
Viscosity Index, ISO 2909	202	215

Health and Safety

Health and Safety recommendations for this product can be found on the Material Safety Data Sheet (MSDS) @ http://www.msds.exxonmobil.com/psims/psims.aspx

All trademarks used herein are trademarks or registered trademarks of Exxon Mobil Corporation or one of its subsidiaries unless indicated otherwise.

09-2025

ExxonMobil (China) Investment Co. Ltd
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China

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http://www.exxonmobil.com

Typical Properties are typical of those obtained with normal production tolerance and do not constitute a specification. Variations that do not affect product performance are to be expected during normal manufacture and at different blending locations. The information contained herein is subject to change without notice. All products may not be available locally. For more information, contact your local ExxonMobil contact or visit www.exxonmobil.com
ExxonMobil is comprised of numerous affiliates and subsidiaries, many with names that include Esso, Mobil, or ExxonMobil. Nothing in this document is intended to override or supersede the corporate separateness of local entities. Responsibility for local action and accountability remains with the local ExxonMobil-affiliate entities.