PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5927O-Ring

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 5331-00-397-4440 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-397-4440 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-397-4440. Primary manufacturer part number: 5927.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 1.106 INCHES MINIMUM AND 1.118 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE
  • 1 verified cross-reference
  • Primary manufacturer: Circor Aerospace, Inc. Dba Circor Aerospace Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Plastic Polytetrafluoroethylene construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-397-4440, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). 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.

Technical Specifications
ParameterValue
NSN5331-00-397-4440
Primary Part Number5927
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
Center Hole Diameter1.106 INCHES MINIMUM AND 1.118 INCHES MAXIMUM IN
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
MaterialPLASTIC POLYTETRAFLUOROETHYLENE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
2995-00-136-24235927 INTERCHANGEABLE
Cap,locking,valve
Eaton Aerospace, Llc Dba Jackson South
5960-00-237-0103 INTERCHANGEABLE
Electron Tube
5935-00-262-32795927 INTERCHANGEABLE
Connector,receptacle,electrical
Southconn Technologies Inc Dba Ripley Photocontrols
4730-00-278-8573 INTERCHANGEABLE
Spud,water Closet
2920-00-640-7797166-0235 INTERCHANGEABLE
Cap,ignition Distribution
Cummins Power Generation Inc.
5950-00-647-58997485509P001 INTERCHANGEABLE
Transformer,power
Lockheed Martin Corporation Div Rms
6220-01-480-2850EP0031213 INTERCHANGEABLE
Lens,light
Independent Rough Terrain Center Llc
6515-01-559-7756JK174 INTERCHANGEABLE
Case Lid,clip,aneurysm
Aesculap, Inc
7530-01-606-04385927 INTERCHANGEABLE
Paper,bond
3 Star Papers Ltd Dba Limited Papers Div Limited Papers
Cross-Reference Index
Part NumberManufacturer
5927 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
2995-00-136-2423INTERCHANGEABLE
CAP,LOCKING,VALVE
5927
5960-00-237-0103INTERCHANGEABLE
ELECTRON TUBE
5935-00-262-3279INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5927
4730-00-278-8573INTERCHANGEABLE
SPUD,WATER CLOSET
2920-00-640-7797INTERCHANGEABLE
CAP,IGNITION DISTRIBUTION
166-0235
5950-00-647-5899INTERCHANGEABLE
TRANSFORMER,POWER
7485509P001
6220-01-480-2850INTERCHANGEABLE
LENS,LIGHT
EP0031213
6515-01-559-7756INTERCHANGEABLE
CASE LID,CLIP,ANEURYSM
JK174
7530-01-606-0438INTERCHANGEABLE
PAPER,BOND
5927

Frequently Asked Questions

What is NSN 5331-00-397-4440?

NSN 5331-00-397-4440 is a O-Ring, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-397-4440?

NSN 5331-00-397-4440 has 1 cross-referenced part number: 5927 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 5331-00-397-4440?

There are 9 known substitutes for 5331-00-397-4440: 2995-00-136-2423, 5960-00-237-0103, 5935-00-262-3279 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5927?

Key specifications for 5927: Center Hole Diameter: 1.106 INCHES MINIMUM AND 1.118 INCHES MAXIMUM IN; Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Material: PLASTIC POLYTETRAFLUOROETHYLENE. 3 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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