Krytox® fluorinated lubricants
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General information
Krytox® oils are perfluoropolyethers that are thickened to form a grease with PTFE – polytetrafluoroether, which is sold by the manufacturer DuPont under the brand name Teflon®. Krytox® was developed in the 1960s by DuPont together with the U.S. Airforce and later used to great success by NASA in the Apollo space missions. Krytox® was the first synthetic lubricant formulated with PTFE.
Krytox® has become a general-purpose product with a wide range of uses thanks to its extraordinary product characteristics and its ability to accept various additives. Krytox® lubricants can be divided into three basic groups. Along with the general-purpose lubricants or GPLs, special grades have been developed for use in aerospace and vacuum applications, which have particular requirements.
Besides that, the XHT grades specially formulated for use in high-temperature applications are available.
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Technical information
The lubricating oils and greases in the Krytox® product range are extremely stable and reliable high-performance lubricants, capable of working in a temperature range from -70° C to 400° C. The high-quality PFPE oils and the PTFE-thickened greases have a very low coefficient of friction and are extremely long-lasting. They resist severe mechanical stresses and are not soluble in most solvents. Krytox® are non-flammable and non-ignitable. The multi-fluorinated lubricants in the Krytox® range are chemically inert and oxygen-resistant. They are also compatible with most common elastomers and plastics. Krytox® is environmentally neutral and can be regenerated after use.
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| Product summary: |
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Krytox ® GPL types
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GPL oil type
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100
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101
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102
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103
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104
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105
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106
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107
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GPL standard grease type
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200
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201
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202
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203
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204
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205
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206
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207
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GPL high-pressure grease type
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210
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211
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212
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213
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214
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215
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216
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217
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| GPL anti-corrosion grease type |
220
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221
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222
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223
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224
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225
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226
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227
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Recommended operational temperature
range in °C
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<-70/66
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<-70/104
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-63/132
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-60/154
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-51/179
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-36/204
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-36/260
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-30/288
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Krytox ® aerospace greases
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Aerospace grease type
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240 AZ
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240 AA
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240 AB
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240 AC
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240 AD
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High-pressure grease type
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250 AZ
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250 AA
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250 AB
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250 AC
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250 AD
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Anti-corrosion grease type
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283 AZ
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283 AA
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283 AB
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283 AC
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283 AD
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Recommended operational temperature
range in °C
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-57/149
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-51/177
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-40/232
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-34/288
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-29/316
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Krytox ® aerospace oils
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Aerospace oil type
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143 AZ
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143 AA
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143 AY
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143 AB
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143 AC
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143 AD
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Recommended operational temperature
range in °C
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-57/149
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-57/177
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-51/204
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-46/232
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-34/288
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-29/316
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Krytox ® lubricants for vacuum applications
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Grease
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Oil
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LVP
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1506/1506XP
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1514/1514XP
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1525/1525XP
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1618
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16256
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Recommended operational temperature
range in °C
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-15/300
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-57/149
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-57/177
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-51/204
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-46/232
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-34/288
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Krytox ® XHT greases
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XHT type
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S and SX
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AC, ACX, RUF and RUFX
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BD, BDX and BDZ
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NM and NMX
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Recommended operational temperature
range in °C |
300/400
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300/400
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300/over 400
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300/400
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Krytox ® FG
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Krytox® FG 10
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Vacuum pump oil
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-60 to 140 °C
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Krytox® FG 12
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Vacuum pump oil
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-55 to 160 °C
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Krytox® FG 15
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Vacuum pump oil
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-50 to 180 °C
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| Krytox® FG 20 |
Grease
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-60 to 154 °C
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| Krytox® FG 22 |
Grease
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-36 to 204 °C
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| Krytox® FG 24 |
Grease
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-30 to 260 °C
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| Krytox® FG 26 |
Grease
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-10 to 300 °C
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| Krytox® FG 30 |
Grease with anti-corrosion additive
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-60 to 154 °C
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| Krytox® FG 32 |
Grease with anti-corrosion additive
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-36 to 204 °C
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| Krytox® FG 34 |
Grease with anti-corrosion additive
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-30 to 260 °C
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| Krytox® FG 36 |
Grease with anti-corrosion additive
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-10 to 300 °C
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| Krytox® FG 40 |
Oil
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-36 to 204 °C
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| Krytox® FG 45 |
Oil
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-20 to 300 °C
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Krytox® FG 50 |
Oil with anti-corrosion additive
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-36 to 180 °C
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Releases
Krytox® products tested by BAM (Bundesanstalt für Materialforschung und -prüfung) [German Federal Institute for Materials Research and Testing]:
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Temperature
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< 60 °C
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60-100 °C
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60-150 °C
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100-175 °C
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150-200 °C
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200-250 °C
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Krytox® 143 AC
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120 bar
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100 bar
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60 bar
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| Krytox® 240 AC |
110 bar
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100 bar
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80 bar
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| Krytox® GPL 226 |
110 bar
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100 bar
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80 bar
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40 bar
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| Krytox® 1514 |
OK (filling liquid for vacuum pumps running on oxygen) 440°C, 2 bar
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| Krytox® 1525 |
OK (filling liquid for vacuum pumps running on oxygen) 440°C, 2 bar
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| Krytox® 16256 |
140 bar
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Krytox® products tested by BOC:
Krytox® GPL 105 345 bar (90°C)
Krytox® GPL 205 345 bar (90°C)
EN ISO 1114-3 “Mobile gas flasks – compatibility of materials for gas flasks and valves with the contact gases – part 3: testing of spontaneous ignition temperature in oxygenated atmosphere”)
EN 1797-1 (“Cryogenic vessels – Gas/material compatibility”)
Krytox® 1506 121 bar (500°C)
Krytox® 1525 121 bar (500°C)
Krytox® GPL 226 121 bar (500°C)
Krytox® 283 121 bar (500°C)
Krytox® products released under DIN EN 377 (“Lubricants for applications in appliances and associated controls using combustible gases...”):
Krytox® GPL 224 0°C bis 90°C
Krytox® GPL 225 0°C bis 160°C
Krytox® products released under DIN 3536 (“Lubricants for gas valves in indoor installation, gas distribution and gas transportation pipe lines”):
Krytox® GPL 224 -20°C bis 90°C
Krytox® GPL 225 -20°C bis 160°C
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| Military specifications: |
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U.S.
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NATO
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Specifications
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Produkt
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NSN OR FSN
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| MIL-G-38220 |
Krytox 240 AB
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| MIL-G-38220 |
Krytox 240 AC
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9150-00-961-8995
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| MIL-G-38220 |
(above two incorporated into this spec.)
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| TYPE I |
Krytox 240 AZ NLGI GRADE 1
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9150-01-007-4384
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| TYPE II |
Krytox 240 AB " " 2
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9150-01-008-0498
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| TYPE III |
Krytox 240 AC " " 2
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9150-00-961-8995
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| MIS 13429B |
Krytox 240 AC
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9150-00-082-5539
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| NAVSHIPS NOTICE 9230 |
Krytox 240 AC
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| SM-C-804199 |
Krytox 240 AZ
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Krytox 240 AB
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9150-01-008-6197
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Grease, Aircraft &
Instrument Multi-
Pupose Lubricant with Molybdenum
Disulfide |
(Moly Disulfide Certified to MIL-M-7866)
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(Belgian Military) 250 AB
with the NATO (OTAN)
reference number |
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9150-01-008-6197
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MSFC 106B LOX IMPACT
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KRYTOX 240 AC
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Krytox® and Teflon® are registered trademarks of DuPont de Nemours Inc., Wilmington, Delaware, USA.
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