Providing Precision Lubricants and Lubrication Solutions


Chemically Inert PFPE
Food Grade Grease: RPL-CPX770

Product Description:

RPL-CPX770 PFPE lubricating grease is the latest in long lasting, chemically inert, non-toxic lubrication. It is blended using 100% Perfluoropolyether base oils composed of carbon, fluorine, and oxygen combined with highest quality additive and thickened with Polytetrafluroroethylene (PFPE) polymer that enhances the frictional and lubricating properties of the Perfluoropolyether fluid.

RPL-CPX770 has a high viscosity index (VI) which results in lower viscosity at low temperatures and higher viscosity at high temperatures. It will resist viscosity loss as a result of mechanical shearing, will provide excellent lubricity, and is thermo-oxidatively stable at over 260C (500F).

RPL-CPX770 is safe, non-toxic, nonflammable, chemically inert with any material and, unlike most high temperature bearing greases that require frequent purging with new grease to prevent bearing failure, it lubricates at high temperature without carbonizing.

Typical applications include industrial bearings and gears operating over a wide temperature range, especially where high oil temperatures result in increased maintenance costs for parts replacement, cleaning and oil changeover. It will enable superior lubrication where chemical and water contamination is severe and harsh. Excellent for sealed for life bearing applications. Commonly used in sealing O-rings and valves in pumping systems. It is is compatible with conventional petroleum gear oils / greases and most any design material.

Features and Benefits:

• Extreme long service life

• Chemically and solvent inert

• Excellent product stability – inert to liquid and gaseous oxygen

• High EP properties

• Compatible with any materials

• Non-reactive with metal, plastic, elastomer and rubber

• Rust protection

• Good demulsibility and  separates readily from water

• Extremely high temperature oxidation and thermal stability/ non-flammable

• Non-Toxic

• Wide temperature range, -20C to over 260C

Typical Operating Properties:

NLGI Grade 2 --
Colour Milky-white --
Thickener PFPE --
Texture Smooth, "buttery" --
Penetration, Worked
60 Strokes (0.1mm) 
272 ASTM D217
Base Oil Viscosity
510 cSt ASTM D445
47 cSt ASTM D445
Viscosity Index 137 ASTM D2270
Pour Point -20C / -4F --
Flash Point Non-Flammable --
Dropping Point Non-Melt ASTM D2265
Rust Test Rating Pass ASTM D1743
Copper Corrosion
2A, No Corrosion ASTM D4048
Water Washout:
(% weight loss)
1.1 ASTM D1264
0 ASTM D2596
4-Ball Wear 0.66 mm ASTM D2266
Specific Gravity 1.940 ASTM D854
Operating Temperature Range Low -20C / -4F --
High 260C / 500F --

* Please note: The information, data and tables contained in this website have been carefully edited at the time of publication. However, no responsibility for possible errors or omissions can be assumed. We recommend contacting our Application Support Staff to discuss your specific requirements. We are constantly updating our products therefore technical data and specifications may change at any time without notice. 08/2017

Method of Application:

No special handling precautions are required. Follow regular maintenance instructions as provided with original equipment. RPL-CPX770 is chemically inert with most design materials but it is recommended to thoroughly clean systems prior to switching over.

Available Container Sizes:

Size Metric US Imperial
Cartridge 0.858 L / 829 g 29 US fluid ounces / 1.83 lbs
Gallon 3.8 L / 6.8 kg 1 gal / 15 lbs
Pail 18.93 L / 34 kg 5 gal / 75 lbs
Keg 56.78 L / 102 kg 15 gal / 225 lbs
* NB: Sizes and weights are approximate.


Did you know?

RPL-CPX770 is compatible with conventional petroleum oils and greases.  It is chemically inert with most design materials.


Material Safety
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Davley Darmex Precision Lubricants, 2011