PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

500318O-Ring

Tri-Tec Manufacturing Llc · NSN 5331-01-676-6643 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-676-6643 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-676-6643. Primary manufacturer part number: 500318.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: Tri-Tec Manufacturing Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-676-6643, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Tri-Tec Manufacturing Llc. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersTri-Tec Manufacturing Llc (CAGE 98032)
Technical Specifications
ParameterValue
NSN5331-01-676-6643
Primary Part Number500318
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerTri-Tec Manufacturing Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5920-00-548-3126 INTERCHANGEABLE
Fuse,cartridge
5920-00-611-665410668241-9 INTERCHANGEABLE
Fuse,cartridge
Us Army Aviation and Missile Command
2805-00-774-4084 INTERCHANGEABLE
Line
5815-00-968-1430312006 INTERCHANGEABLE
Cover
Telemechanics Inc
5920-01-106-90180312006P INTERCHANGEABLE
Fuse,cartridge
Littelfuse, Inc.
5920-01-295-3195312-006 INTERCHANGEABLE
Fuse,cartridge
Littelfuse, Inc.
2090-01-536-9535312006 INTERCHANGEABLE
Cover,ships Upper Deck
Shield Technologies Corp Div Shield Technologies Corporation
Cross-Reference Index
Part NumberManufacturer
500318 PRIMARY Tri-Tec Manufacturing Llc (USA)
312006 ITEM NO. 32 Tri-Tec Manufacturing Llc (USA)
312006 Tri-Tec Manufacturing Llc (USA)
Related Parts
5920-00-548-3126INTERCHANGEABLE
FUSE,CARTRIDGE
5920-00-611-6654INTERCHANGEABLE
FUSE,CARTRIDGE
10668241-9
2805-00-774-4084INTERCHANGEABLE
LINE
5815-00-968-1430INTERCHANGEABLE
COVER
312006
5920-01-106-9018INTERCHANGEABLE
FUSE,CARTRIDGE
0312006P
5920-01-295-3195INTERCHANGEABLE
FUSE,CARTRIDGE
312-006
2090-01-536-9535INTERCHANGEABLE
COVER,SHIPS UPPER DECK
312006

Frequently Asked Questions

What is NSN 5331-01-676-6643?

NSN 5331-01-676-6643 is a O-Ring, manufactured by Tri-Tec Manufacturing Llc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-676-6643?

NSN 5331-01-676-6643 has 3 cross-referenced part numbers: 500318 (Tri-Tec Manufacturing Llc), 312006 ITEM NO. 32 (Tri-Tec Manufacturing Llc), 312006 (Tri-Tec Manufacturing Llc).

What NSN replaces 5331-01-676-6643?

There are 7 known substitutes for 5331-01-676-6643: 5920-00-548-3126, 5920-00-611-6654, 2805-00-774-4084 and 4 more. Verify interchangeability with system specifications before substitution.

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