PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

440051-2200 CPO-Ring

Naval Inventory Control Point Mechanicsburg · NSN 5331-01-647-5972 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-647-5972 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-647-5972. Primary manufacturer part number: 440051-2200 CP.
Features
  • O-Ring — FSC 5331
  • 9 verified cross-references
  • Primary manufacturer: Naval Inventory Control Point Mechanicsburg
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-647-5972, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Inventory Control Point Mechanicsburg. This item has 9 commercial cross-references from 4 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)
ManufacturersNaval Inventory Control Point Mechanicsburg (CAGE 03950); Sae International Dba Sae International (CAGE 0U583); Society of Automotive Engineers Inc (CAGE 81343); Marotta Controls Inc (CAGE 99657)
Technical Specifications
ParameterValue
NSN5331-01-647-5972
Primary Part Number440051-2200 CP
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerNaval Inventory Control Point Mechanicsburg
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5331-00-103-2911AS3581-220 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-166-1111AS3581-220 INTERCHANGEABLE
O-Ring
Defense Logistics Agency Dba Defense Supply Center Philadelphia
Cross-Reference Index
Part NumberManufacturer
440051-2200 CP Naval Inventory Control Point Mechanicsburg (USA)
AS3581-220 CP Sae International Dba Sae International (USA)
285008-0001 ITEM NO. 66 CP Naval Inventory Control Point Mechanicsburg (USA)
AS3581-220 CP Naval Inventory Control Point Mechanicsburg (USA)
AS3581-220 Society of Automotive Engineers Inc (USA)
AS3581-220 Sae International Dba Sae International (USA)
AS3581-220 CPCP Naval Inventory Control Point Mechanicsburg (USA)
440051-2200 Marotta Controls Inc (USA)
285008-0001 ITEM NO. 66 Marotta Controls Inc (USA)
Related Parts
5331-00-103-2911INTERCHANGEABLE
O-RING
AS3581-220
5331-00-166-1111INTERCHANGEABLE
O-RING
AS3581-220

Frequently Asked Questions

What is NSN 5331-01-647-5972?

NSN 5331-01-647-5972 is a O-Ring, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-647-5972?

NSN 5331-01-647-5972 has 9 cross-referenced part numbers: 440051-2200 CP (Naval Inventory Control Point Mechanicsburg), AS3581-220 CP (Sae International Dba Sae International), 285008-0001 ITEM NO. 66 CP (Naval Inventory Control Point Mechanicsburg), AS3581-220 CP (Naval Inventory Control Point Mechanicsburg), AS3581-220 (Society of Automotive Engineers Inc) and 4 more.

What NSN replaces 5331-01-647-5972?

There are 2 known substitutes for 5331-01-647-5972: 5331-00-103-2911, 5331-00-166-1111. Verify interchangeability with system specifications before substitution.

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