Krytox® GPL 106, 206,

High performance grease and oil for bearings, valves, seals, and other 
applications over a wide temperature range.
DuPont™ Krytox® oils and greases are based on 
perfluoropolyether (PFPE) oils. This series of synthetic 
fluorinated lubricants are used in extreme conditions such as 
continuous high temperatures up to 260 °C (500 °F) and will 
survive short term peak temperatures of up to 270 °C 
(518 °F). Chemically inert and safe for use around most 
chemicals, these lubricants are nonflammable and are also 
safe for use in oxygen service. Krytox® oils and greases do not 
damage plastics or elastomers nor cause corrosion to metals. 
They are commonly used as lubricants in aerospace, automotive, 
industrial and semiconductor applications as well as in solving 
many other routine lubrication problems. In addition, they provide 
exceptionally long lifetimes in sealed-for-life bearings and extend 
relubrication intervals in bearings that require relubrication.
DuPont™ Krytox® GPL 106 Oil
Krytox® GPL 106 oil is a clear colorless fluorinated synthetic 
oil that is nonreactive, nonflammable, safe in chemical 
and oxygen service, and is long lasting. Krytox® is a 
perfluoropolyether (PFPE)--also called perfluoroalkylether (PFAE) 
or perfluoropolyalkylether (PFPAE) with the following 
chemical structure:
F- (CF-CF2
-O)n-CF2
CF3
 | where n = 10–60
 CF3
The polymer chain is completely saturated and contains only 
carbon, oxygen, and fluorine. On a weight basis, a typical Krytox®
oil contains 21.6% carbon, 9.4% oxygen, and 69.0% fluorine. 
DuPont™ Krytox® GPL 206 Grease
The GPL 206 grease is PTFE thickened, contains no additives 
and can be used on components that come in contact with 
chemicals. Typical applications include valves, instruments or 
bearings in contact with chemicals including alcohols, ammonia, 
solvents, steam, acids and bases, and oxygen systems including 
LOX and GOX. They are commonly used as seal and O-ring 
lubricants and are compatible with all types of seals. 
DuPont™ Krytox® GPL 216 Grease
The GPL 216 grease contains molybdenum disulfide for extreme 
pressure (EP) conditions and should be used for slow speed 
or heavily loaded applications where there is no danger of 
the molybdenum disulfide additive reacting with chemicals or 
causing contamination. 
DuPont™ Krytox® GPL 226 Grease
The GPL 226 grease contains an anti-corrosion/anti-wear inhibitor 
and is ideal for corrosive environments where there is no danger 
of the sodium nitrite additive reacting with chemicals or causing 
contamination problems. Typical applications are automotive 
bearings, sealed pump bearings, electric motor bearings, and 
general purpose bearings.
Krytox® oils and greases are silicone free. They do not 
contain any VOC materials or chlorine and are not hazardous 
to the atmosphere or ozone layer. They are biologically and 
environmentally inert. 
The fully fluorinated Krytox® high-temperature stability provides 
bottom-line savings from improved reliability and a reduction in 
grease usage and manpower through extended relubrication 
intervals. Excellent film strength reduces wear to reduce 
maintenance costs. Under high loads the viscosity increases to 
provide support and absorb the pressure.
Preparing the Application for Krytox®
New components often have organic rust preventive oils or 
greases on them to prevent damage while they are in storage 
before use. New bearings should be inspected for damage and 
cleanliness before use. The components must be completely 
cleaned of greases or preservative oils when using Krytox® as 
a lubricant. Failure to do so could result in reduced bearing life. 
Bearing life tests on un-cleaned bearings have shown reduced 
life in high temperature, high speed tests where the bearing was 
filled with a minimum amount of grease. The preservatives coat 
the metal surface to prevent rusting so they can also prevent 
the grease from adhering, causing them to be thrown off by the 
action of the bearing. They could also oxidize and harden and can 
create debris which will contaminate the grease.These greases are compatible with other PFPE/PTFE greases but 
PFPE lubricants should not be mixed with other common types 
of lubricants. 
Storage and Shelf Life
Because of the inert, non oxidizing nature of the ingredients, 
Typical Properties GPL 106 GPL 206 GPL 216 GPL 226
Anti-Corrosion Additive No No No Yes
Extreme Pressure Additive No No Yes No
Anti-Rust Rating, ASTM D-1743 NA NA NA Pass
Appearance Clear Oil White, Creamy Consistency Black, Creamy Consistency White, Creamy Consistency
4 Ball Wear, ASTM D4172 (oil)/D2266 (grease)
40 kg, 1200 rpm, 1 hr at 75 °C
0.66 mm 0.97 mm 1.29 mm 0.81 mm
4 Ball EP, ASTM D2783 (oil)/2596 (grease) LWI/weld load 108.2/400 kg 139.4/800 kg 139.0/620 kg *199.9/above 800 kg
Estimated Useful Temperature Range –36 °C (–33 °F) to 260 °C (500 °F)
Base Oil Viscosity, cSt 20 °C (68 °F)
 40 °C (104 °F)
 100 °C (212 °F)
 204 °C (400 °F)
822
243
25
4.1
Oil Viscosity Index 134
Oil Separation, wt% after 30 hr, 99 °C (210 °F) 4
Max. Oil Volatility, % in 22 hr, D2595 121 °C (250 °F)
 204 °C (400 °F)
<1
<3
Dropping Point NA
Standard NLGI Grade (others available on special request) — 2 2 2
Specific Gravity at 0 °C (32 °F), g/cm3
1.94 1.98 2.12 1.99
Food Contact Approval None NSF H-1 None NSF H-1
Product Properties
These values are typical properties and are not specifications
 *Grease exceeded maximum capacity of machine. Theoretical load wear index based on 10 loads