Krytox™ 240AC Mil Spec PRF 27617 aviation grease

1.971,62 zl PLN

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Atest: NSF H1 spożywczy do kontaktu z żywnością

Baza chemiczna: Flurowa PFPE Perfluoropolieter

Cechy szczególne: Dobra ochrona przed korozją, Dobra odporność chemiczna, Dobra odporność na utlenianie, Dobra przyczepność do wielu podłoży, Kompatybilność guma i tworzywa, Niski poziom hałasu, Wydajność w dużych prędkościach, Wydajność w niskich prędkościach, Wydajność w wysokich temperatur., Wysoka przyczepność i adhezja

Konsystencja NLGI: NLGI 2

Niska temperatura: od -31°C do -50°C

Przemysł: Chemia i Petrochemia, Energetyczny, Lotnictwo, Medycyna i farmacja, Obróbka i produkcja metali, Papier i Celuloza, Ropa i gaz, Żywność i Napoje

Skład Ciała Stałe: PTFE teflon

Wysoka temperatura: +250°C do 300°C

Zastosowanie: Chemiczne żrące środowisko, Maszyny spożywcze, Papier i tektura, Pompy, Próżnia, Próżnia pompy próżniowe, Silniki elektryczne, Smarowanie gumy i elastomerów, Smarowanie tworzyw sztucznych, uszczelnienia, uszczelnienia o-ringi i zawory, Usługi reaktywne, Wielozadaniowe, Łożyska toczne

Krytox™ 240AC Aerospace Grease

Aviation grease meeting the requirements of MIL-PRF-27617 type III (NATO number G-399) for aircraft and devices, resistant to fuel and oxidants.

Krytox™ 240AC is a white grease that is non-reactive, non-flammable, safe in chemical and oxygen environments and extremely durable. Meets MIL-PRF-27617 type I, II and III standards.

application-of-krytox-240ac-grease-in-aviation

    Application

    • bearings,
    • gears,
    • seals,
    • o-rings,
    • manometers,
    • valves,
    • gaskets and quick couplers
    • oil tank mounting bracket for Trent 1000 engine.
    • Connectors, valves, regulators and gaskets for oxygen installations
    • Liquid propellant rocket engines and ground systems support
    • Instruments, gyroscopes and gimbals
    • Seals, valves and pneumatics
    • Lead and ball screws
    • Electromechanical actuators
    • Spline clutches of the engine's auxiliary gearbox
    • Anti-friction bearings, engine oil tanks
    • Non-conductive grease for sealing electrical installations of connectors
    • IR sensors and optics

    Features and benefits

    • Chemically inert
    • Operation over a wide temperature range
    • Low gassing
    • Incombustible
    • Non-toxic, chemically inert and non-evaporating
    • Unaffected lubricity and viscosity over a wide temperature range: -34°C to 288°C
    • Stable physical properties over time, including radiation resistance
    • Virtually insensitive to harsh environmental conditions and harsh chemicals
    • Resistant to vapor loss in vacuum (e.g. during high-altitude orbit or spaceflight)
    • Long wear and low energy consumption due to excellent friction reducing properties
    • Compatible with most metals, elastomers, plastics, paints and finishes
    • Meets the following specifications:
      MIL-PRF-27617 Type III
      NATO#G-399
      NSF H-1 Food Grade -
    • National Stock Numbers (NSN):
      9150-01-008-0495
      9150-00-961-8995
      9150-01-543-2899
      9150-12-307-2645
      9150-12-338-4838
      9150-99-784-3607
      9150-12-349-5329
      9150-00-083-5589
      91 50-00-726-3553

    ASTM D-3336 test result
    Bearing operation without exceeding set motor overloads and overtorque set point or above temperature limits .
    Used Krytox Grease from the Aerospace series

    test-astm-d3336-lubricants-krytox-aerospace

    Krytox 240AC product specification

    • Viscosity (cSt):
      @ 38°C (100°F): 270
    • Base oil vapor pressure:
      @ 38°C (100°F): 8 x 10 e -8
    • Base oil volatility (wt% loss in 22 hours):
      @ 149°C (300°F): 0
      @ 204°C (400°F): <1
    • Base Oil Pour Point: -35°C (-30°F) )
    • Texture: buttery
    • NLGI Grade: 2
    • Mechanical stability (ASTM D217 10,000 and 100,000 blows): no change
    • Oxidative stability at 99°C (210°F): 0 psig pressure drop after 600 hours.
    • Impact of liquid oxygen (ASTM D2512, NASA MSFC 106B): pass
    • Grease density (at 25°C/77°F): 1.93g/mL
    • Oil separation (weight % loss in 30 hours):
      @ 99°C (210°F): 3
      @ 204°C (400°F): 11
    • Estimated usable range: -34°C to 288°C (-30°F to 550°F)
    • Qualification Reference: AFPET/PTP 08-012
    • MIL-Spec: MIL-PRF-27617 Tyler 2
    • NATO number: G-399
    • Working Penetration Change: +3
    • Copper corrosion (max. 2b): 1b
    • High temperature Bearing performance (min. 500 hrs @ 10,000 rpm, 204°C): Stop after 1320 hrs.
    • % evaporation (ASTM D-2595): 10.1
    • Solubility in fuel (%): 0.3
    • Water leaching characteristic (%): 0.25
    • Number of impurities:
      75 microns and larger: 0
      25-75 Micron:0
    • Resistance to aqueous solutions:
      Distilled water: Complies
      50/50 Distilled Water/Ethanol: Positive
    • Layer stability and corrosion on steel: Positive
    • Primary chemistry: PFPE

    use of krytox 240ac grease in an airplane

    Typical parameters of Krytox Aerospace Grease

    Property ASTM Test method Test Conditions Unit Krytox Aerospace grade of aviation grease
    Grease class 240AZ (H-1) 240AA 240AB 240AC (H-1) 240AD
    (H-1)
    Extreme pressure EP additives 250AZ 250AC 250AD
    Corrosion inhibitor additives 280AB 280AC
    Anti-corrosion additives 283AZ 283AA 283AB 283AC 283AD
    Base oil viscosity ASTM D445 20 °C cSt 60 88 240 800 1540
    38 °C 24.7
    35 86 270 502
    99 °C 4.2
    5.4
    10.5
    26 44
    204 °C 1.08
    1.3
    2.1
    4.1
    6.0
    Base oil vapor pressure Knudsen 38 °C torr 4 x 10-4 1 x 10 -4 5 x 10 -6 8 x 10 -8 6 x 10 -9
    260 °C torr 1.5
    0.8 3 x 10 -2 2 x 10 -3 3 x 10-4
    Base oil volatility ASTM D2595 149 °C wt% loss 18 15 1.9
    204 °C in 22 hrs 17.3
    <1 - 2
    260 °C 76.2 4
    Base oil pour point ASTM D97 °C -55 -50 -40 -35 -thirty
    Texture, appearance buttery
    Penetration ASTM D217 60 strokes 265–295
    Mechanical stability ASTM D217 10,000 and No change from original rating
    100,000 Strokes
    Oxidation stability ASTM D942 99°C (210°F) 0 psig O 2 pressure drop at 600 hrs.
    Liquid oxygen blast ASTM D2512, NASA MSFC 106B pass
    Grease density 25 °C g/mL 1.89
    1.91
    1.92 1.93
    1.93
    Oil separation ASTM D6184 99 °C wt% loss in 30 hrs 6 5 4 3 3
    204 °C 20 12 11 10
    Operating temperature range °C -57 +149 -51 +177 -40 +232 -34 +288 -29 +316

    Storage and durability

    Due to the inert, non-oxidizing nature of the ingredients, Krytox™ greases and oils have an indefinite shelf life if left unopened and stored in a clean, dry place.