AE240/666/667 Assemblies Eaton Aeroquip Medium Pressure Hose MIL-DTL-27267

AE240 / 666 / 667 Medium Pressure Hose Assembly Generator

Note: Images are representative of the series of hose and may show incorrect pressure or other lay-line information.

666/667 Hose supports a vacuum of 28 inches Hg / 711 mm Hg. 666-12 and 667-16 require internal support coil to achieve max vacuum rating.

 Please click a highlighted hose to create an assembly:

Hose Assembly Generator Links



Max Oper PSI

Min Burst PSI

Min Bend


 AE240-3 Hose Assembly 
 AE240-3 w/ Firesleeve 
.125 .268 1500 7500 1.50 .041
 666-4 Hose Assembly 
 666-4 w/ Firesleeve 
.188 .343 1500 12000 2.00 .084
 666-5 Hose Assembly 
 666-5 w/ Firesleeve 
.250 .406 1500 10000 2.00 .105
 666-6 Hose Assembly 
 666-6 w/ Firesleeve 
.313 .469 1500 9000 4.00 .117
 666-8 Hose Assembly 
 666-8 w/ Firesleeve 
.406 .585 1500 8000 4.62 .163
 666-10 Hose Assembly 
 666-10 w/ Firesleeve 
.500 .687 1500 7000 5.50 .200
 666-12 Hose Assembly 
 666-12 w/ Firesleeve 
.630 .812 1000 5000 6.50 .252
 667-16 Hose Assembly 
 667-16 w/ Firesleeve 
.878 1.140 1250 5000 7.38 .525

Sizes in Inches, Weight in pounds. Min burst at room temperature.

     Inner Tube: PTFE inner tube
     Reinforcement & Outer Cover: 
     AE240 / 666 have Type 300 Series stainless steel wire braid outer cover 
     667 has two layers of Type 300 Series stainless steel wire braid

Operating Temperatures:
     -65 F to +450 F
     -53 C to +232 C


Identification bands showing specification number, manufacturers code number, operating pressure and other required information.


Eaton's Aeroquip 666/667 medium pressure PTFE hose may be used for all hydrocarbon fuel systems at pressures to 600 psi without qualification. The rate of effusion of gasses and resistance to capillary leakage of fluid through the hose lines is controlled by a patented extrusion method used to produce PTFE hose liners. 

Used in hydraulic and pneumatic applications at pressures up to 1500psi. The hose is unaffected by all fuels, oils, alcohols, coolants, or solvents commonly used in aircraft. In addition, it is inert to acids both concentrated and diluted. The PTFE liner has sufficient conductivity to prevent electrostatically induced hose failures. The tube is capable of conducting a direct current equal to or greater than 6 micro-amps in sizes -4, -5, -6 and -8, and 10 micro-amps in size -10 and above with a potential of 1000 volts. 

The method of construction of Eaton's Aeroquip PTFE hoses results in a lower volumetric expansion than any elastomer hose. This assures maximum response efficiency in ballistics ejection systems, and brake systems, where there can be no softness under shock load. 

Inherent resiliency and toughness are ensured in the extruded tube by close control of factors affecting crystallinity. Additional structural strength is supplied in Eaton's Aeroquip PTFE hose by the tightly braided stainless steel wire reinforcement. The result is a lightweight hose able to withstand prolonged flexing and vibration under all service conditions. The extruded tube has a tough, smooth, waxlike texture, which resists erosion. No materials of a sticky or viscous nature will stick to its surface. 

PFTE hose has essentially zero moisture absorption. This together with its chemical inertness and anti-adhesive characteristics makes it ideal for missile fluid systems where non-contamination and cleanliness are so essential, and for pneumatic systems when maintenance of low dew point is necessary. 

Service and shelf life of Eaton's Aeroquip PTFE hose are unlimited for all practical purposes. However, experience has shown that service life on impulsing applications may eventually be limited by fatigue in the wire reinforcement. The maximum service life on such applications is best determined by the operator based on experience. 




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