PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11791O-Ring

Aimpoint Inc Dba Aimpoint Inc · NSN 5331-01-549-5836 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-549-5836 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-549-5836. Primary manufacturer part number: 11791.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Aimpoint Inc Dba Aimpoint Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-549-5836, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Aimpoint Inc Dba Aimpoint Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersAimpoint Inc Dba Aimpoint Inc (CAGE 3J629)
Technical Specifications
ParameterValue
NSN5331-01-549-5836
Primary Part Number11791
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerAimpoint Inc Dba Aimpoint Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5935-00-552-2879 INTERCHANGEABLE
Connector,receptacle,electrical
5950-00-706-8266 INTERCHANGEABLE
Coil,radio Frequency
2815-00-718-421111791 INTERCHANGEABLE
Rocker Arm,engine Poppet Valve
Napco International Llc Dba Napco International Inc
2815-00-960-498411791C00 INTERCHANGEABLE
Ring,piston
Kaydon Ring & Seal Inc Dba Skf Precision Technologies
3130-01-228-77382CX348 INTERCHANGEABLE
Bearing Unit,plain
Oshkosh Defense Llc
6105-01-266-369011791 INTERCHANGEABLE
Rotor,motor
Middleby Marshall Inc Toastmaster Cooking and Warming Equipment Div
1377-01-348-64811179-1 INTERCHANGEABLE
Initiator,propellant Actuated
Rockwell Collins Inc
5910-01-475-131111791 INTERCHANGEABLE
Capacitor,fixed,metallized,paper
Basler Electric Co
Cross-Reference Index
Part NumberManufacturer
11791 PRIMARY Aimpoint Inc Dba Aimpoint Inc (USA)
Related Parts
5935-00-552-2879INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5950-00-706-8266INTERCHANGEABLE
COIL,RADIO FREQUENCY
2815-00-718-4211INTERCHANGEABLE
ROCKER ARM,ENGINE POPPET VALVE
11791
2815-00-960-4984INTERCHANGEABLE
RING,PISTON
11791C00
3130-01-228-7738INTERCHANGEABLE
BEARING UNIT,PLAIN
2CX348
6105-01-266-3690INTERCHANGEABLE
ROTOR,MOTOR
11791
1377-01-348-6481INTERCHANGEABLE
INITIATOR,PROPELLANT ACTUATED
1179-1
5910-01-475-1311INTERCHANGEABLE
CAPACITOR,FIXED,METALLIZED,PAPER
11791

Frequently Asked Questions

What is NSN 5331-01-549-5836?

NSN 5331-01-549-5836 is a O-Ring, manufactured by Aimpoint Inc Dba Aimpoint Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-549-5836?

NSN 5331-01-549-5836 has 1 cross-referenced part number: 11791 (Aimpoint Inc Dba Aimpoint Inc).

What NSN replaces 5331-01-549-5836?

There are 8 known substitutes for 5331-01-549-5836: 5935-00-552-2879, 5950-00-706-8266, 2815-00-718-4211 and 5 more. Verify interchangeability with system specifications before substitution.

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