PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

276508O-Ring

Elbit Systems of America - Night Vision Llc · NSN 5331-01-691-8831 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-691-8831 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-691-8831. Primary manufacturer part number: 276508.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Elbit Systems of America - Night Vision Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-691-8831, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Elbit Systems of America - Night Vision Llc. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-691-8831
Primary Part Number276508
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerElbit Systems of America - Night Vision Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-00-125-5988229635N INTERCHANGEABLE
Valve,cross
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
Cross-Reference Index
Part NumberManufacturer
276508 Bma Buizza Mazzei Agency Srl (ITA)
276508 PRIMARY Elbit Systems of America - Night Vision Llc (USA)
Related Parts
4820-00-125-5988INTERCHANGEABLE
VALVE,CROSS
229635N

Frequently Asked Questions

What is NSN 5331-01-691-8831?

NSN 5331-01-691-8831 is a O-Ring, manufactured by Elbit Systems of America - Night Vision Llc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-691-8831?

NSN 5331-01-691-8831 has 2 cross-referenced part numbers: 276508 (Bma Buizza Mazzei Agency Srl), 276508 (Elbit Systems of America - Night Vision Llc).

What NSN replaces 5331-01-691-8831?

There is 1 known substitute for 5331-01-691-8831: 4820-00-125-5988. Verify interchangeability with system specifications before substitution.

What are the specifications of 276508?

Key specifications for 276508: End Item Identification: SPARES FOR TM-NVG; Part Name Assigned by Controlling Agency: O-RING. 2 total characteristics are documented in the Federal Logistics Information System.

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