Performance LubricantsVacuum Pump Fluids

Product Information
Krytox™ vacuum pump fluids (VPF) are used in applications
where conventional vacuum pump oils cause safety,
waste disposal, and maintenance problems. They are
nonflammable and eliminate the chance of fire in pumps.
They are non-reactive and safe to use in oxygen systems.
They can replace competitive PFPE fluids as well as anyother type of vacuum fluid. Krytox™ fluids do not containacetal groups, which are susceptible to attack by Lewis
acids (see Figure 2 and Table 3). This gives Krytox™
superior stability as a vacuum pump fluid. Krytox™ vacuum
fluids are precisely distilled to provide low vapor pressuresand superior performance (see Figure 1). In addition,Krytox™ fluids are recyclable.
Krytox™ XP VPF oils contain a soluble additive to preventrust. This patented additive enhances the performanceof Krytox™ VPF fluids, giving them improved performance
properties. The long-term anti-rust properties repel
moisture, providing extra protection from corrosion ofmetal parts and bearing surfaces.
While Krytox™ VPF fluids are inert and non-reactive to allelastomers, plastics, and metals, the soluble additives
in Krytox™ XP products have not been tested with allmaterials. Initial testing has shown no problems withTeflon™ fluoroplastic resin, Kalrez® perfluoroelastomer
parts, Viton™ fluoroelastomer, nitrile, and silicone rubbers.
The performance of the soluble additives could degrade
at temperatures more than 182 °C (360 °F) over a long
period of time.

Storage and Shelf Life
Krytox™ VPF 15XX series and 16256 oils with noadditives have an indefinite shelf life if left unopened andstored in a clean dry location. Unopened containers ofthese fluids have shown no change in properties after
20 or more years of storage at ambient temperatures.
Opened containers could be contaminated with moistureor dirt and should be used with caution if their storage
history is unknown. If containers of Krytox™ lubricants areclean, uncontaminated, and have been stored so that oilloss is minimized, they are safe for use (because the oiland thickener do not degrade over time).
The 15XX XP series of Krytox™ lubricants can develop anodor and a slight amber/pinkish color over time. The XP
series has a three-year shelf life and a recommended
maximum operating temperature of 182 °C (360 °F).
Testing has shown that these products retain theiranti-rust and anti-wear properties and perform well past
the end of the recommended three-year shelf life. Keepproduct sealed and store in a cool, dry place.
High-Vacuum Grease
Krytox™ LVP is a high vacuum grease formulated with a
special low vapor pressure Krytox™ oil for high-vacuum
applications. It is also useful for sealing laboratory
glassware connections and as a thread lubricant/sealant.
For more information on Krytox™ LVP, see Table 2.

Krytox™

Performance Lubricants

Figure 1. Typical Vapor Pressure—Temperature
Characteristics

Figure 2. Relative Weight Loss of PFPE Fluids in
Presence of a Lewis Acid (90 min at 120 °C [248 °F]
by ISOTGA)

Temperature, °F
0-11020406080100120140 160 180 200 220 240 260 280 300

340380 420

Weight Loss, %-2

100-310203040Vapor Pressure (mmHg or torr)

10-410Krytox™

Krytox™ 1525-510AlCl3, wt%

Krytox™ 1514-6100Krytox™ 150615 15-710-810PFPE
Type A-910-1010-1110-1210-1310PFPE
Type B

Krytox™ 16256
Krytox™ LVP-1410–20–100102030

40

5060

7080

90 100 110 120

140160180 200 220

Temperature, °C

Table 1. Krytox™ Vacuum Pump Fluids Properties*
Krytox™
Property
Average Molecular Weight

Test
MethodConditions

Units

NMR

1506/
1506XP

1514/1514XP

1525/
1525XP

1531/
1531XP

16256

2160

2840

3470

3940

9400

Vapor Pressure**

Knudsen

20 °C (68 °F)
50 °C (122 °F)
100 °C (212 °F)
200 °C (392 °F)

torr4 x 10
1 x 10–5
1 x 10–3
5 x 10–1

2 x 103 x 10–6
1 x 10–4
1 x 10–2

1 x 101 x 10–6
3 x 10–5
2 x 10–3

1 x 101 x 10–6
3 x 10–5
2 x 10–3

3 x 10–14
2 x 10–12
1 x 10–9
2 x 10–6

Kinematic Viscosity

ASTM D445

20 °C (68 °F)
50 °C (122 °F)
100 °C (212 °F)

mm2/s(cSt)

60
15.5
4.1

140
32
7.2

250
52
10.6

310
63
12.5

2560
437
64.6

20 °C (68 °F)
50 °C (122 °F)
100 °C (212 °F)
200 °C (392 °F)

g/cc

1.881.82
1.73
1.54

1.89
1.83
1.74
1.55

1.90
1.84
1.75
1.56

1.90
1.84
1.75
1.56

1.92
1.87
1.78
1.61°C (°F)

–60 (–76)–54 (–65)–48 (–54)–41 (–42)–15 (5)°C (°F)160 (320)

200 (392)

200 (392)

200 (392)NA

220 (428)

280 (536)

300 (572)

300 (572)

NAcal/g

9766NA

Density

Pour PointASTM D97

Distillation

ASTM D1160

Range at 0.4 torr

10%
90%

–7–7–7–7

Heat of Vaporization

Knudsen150–250 °C(302–482 °F)

Volatility at 22 hr

ASTM D2595121 °C (250 °F)

%

6.5

1.3

0.6

0.4

0.2

25 °C (77 °F)

dyn/cm1718191919

NSF H-1/No

NSF H-1/No

NSF H-1/No

None

None

Surface Tension
Food Contact Approval*This table gives typical properties based on historical production performance. Chemours does not make any express or implied warranty that these products will continue to have these typical properties.
** Actual values are equal to or less than those indicated.

Krytox™

Performance Lubricants

Table 2. Krytox™ LVP High-Vacuum Grease*

Table 3. Initial Temperature for Depolymerization*Penetration (worked, 25 °C [77 °F]), mm/10

280

NLGI Consistency Grade

2Vapor Pressure, torr at 20 °C (68 °F)
torr at 200 °C (392 °F)
kPa at 20 °C (68 °F)
kPa at 200 °C (392 °F)<1.0 x 10<1.0 x 10–5
<1.3 x 10–14<1.3 x 10–6
–13

Oil Separation (30 hr, 204 °C [400 °F]), wt%

13.8

Evaporation Loss (22 hr, 204 °C [400 °F]), wt%

0.3

Density (25 °C [77 °F]), g/cc

1.94

* This table gives typical properties based on historical production performance. Chemours
does not make any express or implied warranty that these products will continue to havethese typical properties.

Fluid Type°C (°F)

Perfluoroalky Ether
Krytox™ (no -0-CF2-0- links)

142 (287)

Type A (some -0-CF2-0- links)

102 (216)

Type B (many -0-CF2-0- links and no shielding)72 (162)

Hydrocarbon

79 (174)

Silicone

58 (136)

Fluorosilicone

82 (180)*This is the threshold temperature for the initial reaction in the presence of the Lewis Acid
Aluminum Chloride as measured in a differential scanning calorimeter.

The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.

For product information, industry applications, technical assistance, or global distributor contacts, visit krytox.com or within theU.S. and Canada, call 1-844-773-CHEM/2436 or outside of the U.S., call 1-302-773-1000.
© 2023 The Chemours Company FC, LLC. Krytox™ and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and the Chemours Logo aretrademarks of The Chemours Company. .

C-10291 0423

NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.