Krytox™ 240 AC

MIL PRF-27617 Grease Krytox™ 240 AC Qualification Reference Number, 1 Oct 2008

AFPET/PTPT 08-013

MIL PRF-27617 Grease Krytox™ 240 AC Grease Type/Operating Range, °C

Type III (–34 to 288)

MIL PRF-27617 Grease Krytox™ 240 AC NATO Number

G-399

MIL PRF-27617 Grease Krytox™ 240 AC Penetration Grade

NLGI 2

MIL PRF-27617 Grease Krytox™ 240 AC Change in Worked Penetration (30 max.)

–3

MIL PRF-27617 Grease Krytox™ 240 AC Corrosion on Copper (2b max.)

1b

MIL PRF-27617 Grease Krytox™ 240 AC High Temperature Bearing Performance (500 hr min. at 10,000 RPM, 204 °C)

Stopped at 1685 hr

MIL PRF-27617 Grease Krytox™ 240 AC Evaporation ASTM D-2595, %

0.2

Oil Separation, %

15.5

Solubility in Fuel (20% max.), %

0.1

MIL PRF-27617 Grease Krytox™ 240 AC Liquid Oxygen Impact Sensitivity 20 impacts at 43.3 in, no reaction

No Reaction

MIL PRF-27617 Grease Krytox™ 240 AC Water Washout Characteristics (20% max.), %

—

MIL PRF-27617 Grease Krytox™ 240 AC Oxidation Stability (5 max.), psi

—

MIL PRF-27617 Grease Krytox™ 240 AC Dirt Count 75 μ and larger (0 per cc max.) 25 to 74 μ (1000 per cc max.)

0/0

MIL PRF-27617 Grease Krytox™ 240 AC Resistance to Aqueous Solution Distilled Water 50/50 Distilled Water/Ethanol

Pass

MIL PRF-27617 Grease Krytox™ 240 AC Film Stability and Corrosion on Steel

Pass

Krytox™ Base Oil Viscosity, 40 °C, cSt

243

Krytox™ Useful Range, °C

–34 to 288

MIL PRF-27617 Grease Krytox™ 240 AC Determination of % TML and CVCM from Thermal Outgassing

TML = 0.141; CVCM = 0.051