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Typical Properties & Applications of PFPE Greases

General Properties

PFPE greases are homogenous, white, thick and particularly resistance to oxidation and to chemical agents. Further, they are compatible with all types of material (glass, metals, elastomers, plastics, ceramics) and their properties remain unaltered over wide temperature ranges. PFPE greases can be used in the presence of water, oils, vapor and, in general, with all organic substances and solvents which are not highly fluorinated, without being removed, dissolved or modified in any way.

Grease Type OT 20 UT 18 RT 15 Y-VAC 3 ZLHT ZNF
Viscosity of base fluid
at 20°C
(ASTM D 445)(cSt)
35 500 1300 1500 150 250
Thickener PTFE PTFE PTFE PTFE PTFE PTFE
Penetration unworked
after 60 strokes
(ASTM D 217) mm/10

280
285

280
285

276
278

240
245

280
280

240
40
NLGI Class 2 2 2 3 2 3
Stability after 10000
strokes (ASTM D 217)
(mm/10)
300 295 290 260 285 245
Anti Rust Additivation no no no no no no
Apparent viscosity
Poise at 20°C
Shear rate 100 sec - 1
Shear rate 300 sec -1


90
40


130
80


190
100


280
140


150
60


240
100
Oil separation
FTMS 791-321
Weight loss(%)
@ 66°C/30h:
3
@ 149°C/30h:
6
@ 204°C/30h:
7.7
@ 204°C/30h:
8
@ 204°C/30h:
6.6
@ 204°C/30h:
8
Evaporation
(ASTM D 972)
Weight loss(%)
@ 66°C/22h: 0.2 @ 149°C/22h: 0.4 @ 204°C/22h: 0.5 @ 204°C/22h: 0.3 @ 204°C/22h: 2.8 @ 204°C/22h: 0.2
Range of Continuous Use
Temp(°C)
-50 to +70 -30 to +230 -20 to +250 -20 to +250 -65 to +200 -60 to +200
Product Page More Info More Info More Info More Info More Info More Info

Grease Type AR 555 GRM 30 GRM 60
NLGI Class
(ASTM D217)
2 2 2
Density(g/cm3), 20°C
(ASTM D891)
2 2 2
Kinematic Viscosity(cSt)
(ASTM D445)
@20°C: 1500
@40°C: 420
@100°C: 40
@20°C: 280
@40°C: 159
@100°C: 45
@20°C: 550
@40°C: 310
@100°C: 86
Viscosity Index(cSt)
(ASTM D2270)
135 338 343
Vapor Pressure(torr), @20°C 3.9 x 10-11 1.4 x 10-8 3.5 x 10-9
Weight loss(%)
@204°C/30hr
(ASTM D2595)
1.2 0.5 0.3
Oil Separation(%)
@204°C/30hr
(FTMS 791-321)
7.2 10.7 6.1
Anti-rust Additivation yes no no
Emcor Test(DIN 51802) 1/2 NA NA
Penetration(mm/10) @25°C
(ASTM D217, worked 60 strokes)
290 277 275
Speedy Factor(dm.n) 250,000 500,000 400,000
Cont. Service Temp. Range(°C) -20 to +250 -60 to +200 -50 to +230
Product Page More Info More Info More Info

Typical Applications

  • Aircraft instrument bearing grease.
  • Taper plug valve, gaskets, and joint bearings in aircraft fuel systems.
  • Valve and O-ring lubricant in oxygen service.
  • Impregnate for O-rings in pharmaceutical equipment.
  • Pump seal and bearing lubricant in chlorine or strong oxidizer service.
  • Spindle and actuator bearings in disk drives.
  • Lubricate gears, bearings, and pulleys in Class 100 or cleaner manufacturing areas.
  • Mechanical components of cameras used in deep space.
  • Astronaut space suit bearing and breathing apparatus lubricant.
  • Oven conveyor chain and bearing lubricant.
  • Mold release agent for plastic injection molding.
  • Plasma etching equipment lubricant.
  • Robots in wafer handling, clean room, and commercial environments.
  • Air conditioning bearing and cabin pressurization valves on aircraft.
  • Vacuum grease in semiconductor processing.
  • Top coating lubricant on computer disc drives.

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