PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25-260O-Ring

Hii Unmanned Systems, Inc · NSN 5331-01-687-5517 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-687-5517 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-687-5517. Primary manufacturer part number: 25-260.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Hii Unmanned Systems, Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-687-5517, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Hii Unmanned Systems, Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersHii Unmanned Systems, Inc (CAGE 4Z5A9)
Technical Specifications
ParameterValue
NSN5331-01-687-5517
Primary Part Number25-260
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerHii Unmanned Systems, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5307-00-514-6835 INTERCHANGEABLE
Stud,shouldered
2940-00-541-3493C102B INTERCHANGEABLE
Filter Element,fluid
Honeywell International Inc Dba Honeywell Div Consumer Products Group
4710-01-011-637125260 INTERCHANGEABLE
Tube Assembly,metal
Williams International Co., L.l.c.
5985-01-258-432225260 INTERCHANGEABLE
Coupler,directional
Narda Holdings, Inc. Div Dba Narda-Miteq
5945-01-259-5274 INTERCHANGEABLE
Relay,thermal
5331-01-289-3130 INTERCHANGEABLE
O-Ring
5120-01-367-3369 INTERCHANGEABLE
Wrench,box and Open End,combinat
6515-01-656-9392M40092 INTERCHANGEABLE
Hose Assembly,air Duct,air Breat
Automedx, Llc
5120-01-676-187425260 INTERCHANGEABLE
Ripper,sledge Attachment
Slide Sledge Llc
Cross-Reference Index
Part NumberManufacturer
25-260 PRIMARY Hii Unmanned Systems, Inc (USA)
Related Parts
5307-00-514-6835INTERCHANGEABLE
STUD,SHOULDERED
2940-00-541-3493INTERCHANGEABLE
FILTER ELEMENT,FLUID
C102B
4710-01-011-6371INTERCHANGEABLE
TUBE ASSEMBLY,METAL
25260
5985-01-258-4322INTERCHANGEABLE
COUPLER,DIRECTIONAL
25260
5945-01-259-5274INTERCHANGEABLE
RELAY,THERMAL
5331-01-289-3130INTERCHANGEABLE
O-RING
5120-01-367-3369INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT
6515-01-656-9392INTERCHANGEABLE
HOSE ASSEMBLY,AIR DUCT,AIR BREAT
M40092
5120-01-676-1874INTERCHANGEABLE
RIPPER,SLEDGE ATTACHMENT
25260

Frequently Asked Questions

What is NSN 5331-01-687-5517?

NSN 5331-01-687-5517 is a O-Ring, manufactured by Hii Unmanned Systems, Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-687-5517?

NSN 5331-01-687-5517 has 1 cross-referenced part number: 25-260 (Hii Unmanned Systems, Inc).

What NSN replaces 5331-01-687-5517?

There are 9 known substitutes for 5331-01-687-5517: 5307-00-514-6835, 2940-00-541-3493, 4710-01-011-6371 and 6 more. Verify interchangeability with system specifications before substitution.

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