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PartsTable / COMPONENT / MIL-DTL-25666/1
MIL-DTL-25666/1 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The MIL-DTL-25666/1 is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-078-8227, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MIL-DTL-25666/1
NSN: 1660-00-078-8227
FSC: 1660
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberMIL-DTL-25666/1
NSN1660-00-078-8227
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MIL-DTL-25666/1 TITLE COMPONENT PN MIL-DTL-25666/1 MFR MIL-DTL-25666/1
KEY FEATURES
•
FSC APPLICATION DATA: OXYGEN BREATHING SYSTEM,AIRCRAFT
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 12.700 IN. H,12.750 IN. W,70 PSIG OPERATING PRESSURE,10 LBS PER MIN.OUTPUT CAPACITY,W-PRESSURE OPENING&PRESSURE CLOSING VALVE,1 RELIEF VALVE,W-PRESSURE GAGE,W-OUT WARMING COIL,4 MOUNTING HOLES 0.265 IN. DIA LOCATEDON 11.750 DIA,W-CAPACITANCE GAGING ELEMENT,MAX WT 20 LBS EMPTY,PERFORMANCE PER MILITARY SPECIFICATION MILC25777 LBS
TECHNICAL CHARACTERISTICS (FLIS)
FSC APPLICATION DATAOXYGEN BREATHING SYSTEM,AIRCRAFT
GENERAL CHARACTERISTICS ITEM DESCRIPTION12.700 IN. H,12.750 IN. W,70 PSIG OPERATING PRESSURE,10 LBS PER MIN.OUTPUT CAPACITY,W-PRESSURE OPENING&PRESSURE CLOSING VALVE,1 RELIEF VALVE,W-PRESSURE GAGE,W-OUT WARMING COIL,4 MOUNTING HOLES 0.265 IN. DIA LOCATEDON 11.750 DIA,W-CAPACITANCE GAGING ELEMENT,MAX WT 20 LBS EMPTY,PERFORMANCE PER MILITARY SPECIFICATION MILC25777 LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
187673PC306Interchangeable
interchangeable cross-reference
interchangeable
N325PC343Interchangeable
interchangeable cross-reference
interchangeable
107253PC85Interchangeable
interchangeable cross-reference
interchangeable
E5-45-656Interchangeable
interchangeable cross-reference
interchangeable
21278Interchangeable
interchangeable cross-reference
interchangeable
91546Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-DTL-25666/1?
MIL-DTL-25666/1 is a MIL-DTL-25666/1.
What parts can replace MIL-DTL-25666/1?
There are 20 known substitutes for MIL-DTL-25666/1: 187673PC306, N325PC343, 107253PC85 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-DTL-25666/1?
MIL-DTL-25666/1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 1660-00-078-8227. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026