PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

LS5041-15O-Ring

Lockheed Martin Corp · NSN 5331-00-810-9659 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-810-9659 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-810-9659. Primary manufacturer part number: LS5041-15.
Features
  • O-Ring — FSC 5331
  • 27 verified cross-references
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-00-810-9659, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Lockheed Martin Corp. This item has 27 commercial cross-references from 21 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersEriks B.v. (CAGE H2313); Eaton Aerospace, Llc Dba Jackson South (CAGE 62983); Trelleborg Sealing Solutions Us, Inc. (CAGE 09257); Department of the Air Force (CAGE 80049); Parker Hannifin Corporation Div O-Ring Division (CAGE 25184)
Technical Specifications
ParameterValue
NSN5331-00-810-9659
Primary Part NumberLS5041-15
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerLockheed Martin Corp
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5331-00-020-0105 INTERCHANGEABLE
O-Ring
5331-00-094-6968V0747 3-908 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5940-00-113-8179MS25036-107 INTERCHANGEABLE
Terminal,lug
Sae International Dba Sae International
5330-00-128-0833 INTERCHANGEABLE
Gasket
4820-01-215-65742014-44 PIECE 6 INTERCHANGEABLE
Stem,fluid Valve
Huntington Ingalls Inc Div Newport News Shipbuilding
3020-01-448-85465210249-1 INTERCHANGEABLE
Guard,mechanical Drive
Naval Sea Systems Command
7610-01-470-441421-1217 INTERCHANGEABLE
Manual,technical
Huntron Inc
Cross-Reference Index
Part NumberManufacturer
NAS1595-8ES Eriks B.v. (NLD)
211217 Eaton Aerospace, Llc Dba Jackson South (USA)
TF3-8T Trelleborg Sealing Solutions Us, Inc. (USA)
T.O.9P11-2-4FIG.13-20 Department of the Air Force (USA)
908-17107 Parker Hannifin Corporation Div O-Ring Division (USA)
201444 Triumph Thermal Systems - Maryland, Inc. (USA)
STD3017E8 Baykar Piaggio Aerospace S.p.a. (ITA)
LS5041-15 PRIMARY Lockheed Martin Corp (USA)
2620-241REVCPC306 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
NAS1595-8 PRIMARY National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA)
M8348/1-908 Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA)
99-2975-8 PRIMARY Hamilton Sundstrand Corporation (USA)
52-10249 Transdigm Inc Div Aero Fluid Products (USA)
STD3017E8 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
AE-965-12 ITEM 38 Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div (USA)
TF3-8T Trelleborg Sealing Solutions El Segundo, Inc. Dba Tss El Segundo (USA)
201444 Defense & Development Enterprises Llc (USA)
52-10249 Woodward Hrt Inc (USA)
9779-262X2REVAPC40 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
PRP3-908-17107 Parker Hannifin Corporation Div O-Ring Division (USA)
Related Parts
5331-00-020-0105INTERCHANGEABLE
O-RING
5331-00-094-6968INTERCHANGEABLE
O-RING
V0747 3-908
5940-00-113-8179INTERCHANGEABLE
TERMINAL,LUG
MS25036-107
5330-00-128-0833INTERCHANGEABLE
GASKET
4820-01-215-6574INTERCHANGEABLE
STEM,FLUID VALVE
2014-44 PIECE 6
3020-01-448-8546INTERCHANGEABLE
GUARD,MECHANICAL DRIVE
5210249-1
7610-01-470-4414INTERCHANGEABLE
MANUAL,TECHNICAL
21-1217

Frequently Asked Questions

What is NSN 5331-00-810-9659?

NSN 5331-00-810-9659 is a O-Ring, manufactured by Lockheed Martin Corp, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-810-9659?

NSN 5331-00-810-9659 has 27 cross-referenced part numbers: NAS1595-8ES (Eriks B.v.), 211217 (Eaton Aerospace, Llc Dba Jackson South), TF3-8T (Trelleborg Sealing Solutions Us, Inc.), T.O.9P11-2-4FIG.13-20 (Department of the Air Force), 908-17107 (Parker Hannifin Corporation Div O-Ring Division) and 22 more.

What NSN replaces 5331-00-810-9659?

There are 7 known substitutes for 5331-00-810-9659: 5331-00-020-0105, 5331-00-094-6968, 5940-00-113-8179 and 4 more. Verify interchangeability with system specifications before substitution.

Is NSN 5331-00-810-9659 still in active supply?

NSN 5331-00-810-9659 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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