PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

311129O-Ring

Royal Industries Inc Thomsen Div · NSN 5331-01-117-7309 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-117-7309 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-117-7309. Primary manufacturer part number: 311129.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Royal Industries Inc Thomsen Div
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-117-7309, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Royal Industries Inc Thomsen Div. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersRoyal Industries Inc Thomsen Div (CAGE 52591); Thomsen Equipment Co (CAGE 60318)
Technical Specifications
ParameterValue
NSN5331-01-117-7309
Primary Part Number311129
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerRoyal Industries Inc Thomsen Div
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2530-00-084-75464D3270 INTERCHANGEABLE
Wire Rope Assembly
Caterpillar Inc Div Caterpillar Defense
5310-00-121-828131022 INTERCHANGEABLE
Nut,plain,assembled Washer
Brp Us Inc
Cross-Reference Index
Part NumberManufacturer
311129 Royal Industries Inc Thomsen Div (USA)
311129 Thomsen Equipment Co (USA)
Related Parts
2530-00-084-7546INTERCHANGEABLE
WIRE ROPE ASSEMBLY
4D3270
5310-00-121-8281INTERCHANGEABLE
NUT,PLAIN,ASSEMBLED WASHER
31022

Frequently Asked Questions

What is NSN 5331-01-117-7309?

NSN 5331-01-117-7309 is a O-Ring, manufactured by Royal Industries Inc Thomsen Div, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-117-7309?

NSN 5331-01-117-7309 has 2 cross-referenced part numbers: 311129 (Royal Industries Inc Thomsen Div), 311129 (Thomsen Equipment Co).

What NSN replaces 5331-01-117-7309?

There are 2 known substitutes for 5331-01-117-7309: 2530-00-084-7546, 5310-00-121-8281. Verify interchangeability with system specifications before substitution.

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