PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12490-25O-Ring

Triumph Engine Control Systems Llc · NSN 5331-00-265-1077 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-265-1077 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-265-1077. Primary manufacturer part number: 12490-25.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Temp Rating: -70.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
  • Hardness Rating: 70.0 SHORE DUROMETER A NOMINAL
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • 28 verified cross-references
  • Primary manufacturer: Triumph Engine Control Systems Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-265-1077, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 28 commercial cross-references from 22 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-265-1077
Primary Part Number12490-25
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerTriumph Engine Control Systems Llc
StatusCANCELLED
Center Hole Diameter1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Temp Rating-70.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF
Hardness Rating70.0 SHORE DUROMETER A NOMINAL
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2910-00-078-26920398458 INTERCHANGEABLE
Tank,fuel,engine
Brp Us Inc
5331-00-166-5992 INTERCHANGEABLE
O-Ring
6685-00-425-2373050755 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
5945-00-451-1822247ASC1804-001 INTERCHANGEABLE
Relay,electromagnetic
Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier
4720-00-469-8137300201 INTERCHANGEABLE
Hose,air Duct
Arrowhead Products Corp
5910-00-506-6452 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
5940-00-537-374030-020-1 INTERCHANGEABLE
Cover,terminal Board
Bell Textron Inc
1730-01-043-1593 INTERCHANGEABLE
Hook,s-Shaped
5910-01-049-6963 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
5930-01-105-4545500008-2 INTERCHANGEABLE
Switch,push
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
MS29513-220ES Eriks B.v. (NLD)
8100-1256-0305 PC NO 36 Bath Iron Works Corporation (USA)
2-220N602-7 Parker-Hannifin Corp Div O-Ring Division (USA)
12490-25 PRIMARY Triumph Engine Control Systems Llc (USA)
300201 Kaydon Custom Filtration Corporation (USA)
220-C-69 Federal-Mogul Corp Chassis Products Div (USA)
5000-082 Raytheon Company Div Rmd Strategic (USA)
W154-13 Oil Capital Valve Company Dba Ocv Control Valves Div Ocv Control Valves, Llc (USA)
MILP5315 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS29513-220 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
GS570EM220 Northrop Grumman Systems Corporation (USA)
2-220 N602-70 Parker Hannifin Gmbh O-Ring Division (DEU)
MS29513-220 Society of Automotive Engineers Inc (USA)
MS29513-220 PRIMARY Sae International Dba Sae International (USA)
MS29513-220 Le Joint Francais (FRA)
SAE-AS29513 Sae International Dba Sae International (USA)
HRW640888-1 General Steel Tank Co (USA)
5102105-45 General Steel Tank Co (USA)
8A9017 PRIMARY Triumph Engine Control Systems Llc (USA)
5000-082 Raytheon Company Dba Raytheon (USA)
Related Parts
2910-00-078-2692INTERCHANGEABLE
TANK,FUEL,ENGINE
0398458
5331-00-166-5992INTERCHANGEABLE
O-RING
6685-00-425-2373INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
050755
5945-00-451-1822INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
247ASC1804-001
4720-00-469-8137INTERCHANGEABLE
HOSE,AIR DUCT
300201
5910-00-506-6452INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
5940-00-537-3740INTERCHANGEABLE
COVER,TERMINAL BOARD
30-020-1
1730-01-043-1593INTERCHANGEABLE
HOOK,S-SHAPED
5910-01-049-6963INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
5930-01-105-4545INTERCHANGEABLE
SWITCH,PUSH
500008-2
4820-01-208-7135INTERCHANGEABLE
COVER,VALVE
303070
2910-01-358-8907INTERCHANGEABLE
TANK,FUEL,ENGINE
5008623

Frequently Asked Questions

What is NSN 5331-00-265-1077?

NSN 5331-00-265-1077 is a O-Ring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-265-1077?

NSN 5331-00-265-1077 has 28 cross-referenced part numbers: MS29513-220ES (Eriks B.v.), 8100-1256-0305 PC NO 36 (Bath Iron Works Corporation), 2-220N602-7 (Parker-Hannifin Corp Div O-Ring Division), 12490-25 (Triumph Engine Control Systems Llc), 300201 (Kaydon Custom Filtration Corporation) and 23 more.

What NSN replaces 5331-00-265-1077?

There are 12 known substitutes for 5331-00-265-1077: 2910-00-078-2692, 5331-00-166-5992, 6685-00-425-2373 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12490-25?

Key specifications for 12490-25: End Item Identification: W/S: CVN 68 CLASS REACTOR FILL AUXILIARY SYSTEM; TRUCK, FIRE/CRASH P2; SUBMARINE AUXILLARY AND MISCELLANEOUS SYSTEMS; FIRE PUMPS; AIRCRAFT, (AC-130H, MC-130H, EC-130E, HC-130); LOS ANGELES CLASS SSN (688); TICONDEROGA CLASS CG (47); TRIDENT HULL STRUCTURE; SPRUANCE CLASS DD (963); MAIN FEED PUMPS; Center Hole Diameter: 1.353 INCHES MINIMUM AND 1.365 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Temp Rating: -70.0 FAHRENHEIT AND 180.0 FAHRENHEIT DEGF. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-265-1077 still in active supply?

NSN 5331-00-265-1077 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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