Braycote 640 AC

PFPE propellant and oxidizer compatible grease

Castrol Braycote 640AC is a white, smooth, homogeneous NLGI 2 grease based upon a blend of a perfluoroether base oil and a tetrafluoroethylene telomer.

  • Product category Grease Applications, Speciality (Aviation/ Vacuum/ Semi-Conductor)
  • Application Speciality (Aviation/ Vacuum/ Semi-Conductor)

Description

Castrol Braycote 640AC is a white, smooth, homogeneous NLGI 2 grease based upon a blend of a perfluoroether base oil and a tetrafluoroethylene telomer.
Designed as an oxidizer and propellant compatible grease suitable for use in aerospace vehicles, spacecraft, rocket and aircraft engines and associated ground support equipment, oxygen equipment, and transport equipment.
Typically used in the lubrication of threaded fasteners, connectors, valves, gaskets, elastomers and bearings.
Perfluoroether grease compatible with propellants and oxidisers. It exhibit excellent shelf life due to its intrinsic inertness.

Characteristics

Operating temperature Min. -32.8°F

Max. 399.2°F
Viscosity 270 mm/s² at 104°F
NLGI 2
Oil type PFPE
Thickener PTFE
Food grade No
Product type Greases
Applicable to these sectors Aerospace, Chemicals, Machinery

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