PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400923O-Ring

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5331-00-864-7186 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-864-7186 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-864-7186. Primary manufacturer part number: 400923.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Center Hole Diameter: 3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • 2 verified cross-references
  • Primary manufacturer: Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Fluorocarbon Class Fpm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-864-7186, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-864-7186
Primary Part Number400923
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusCANCELLED
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Center Hole Diameter3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN
MaterialRUBBER FLUOROCARBON CLASS FPM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5331-00-165-1956M83248/1-238 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5961-00-312-4367 INTERCHANGEABLE
Semiconductor Device,diode
5330-01-084-7827 INTERCHANGEABLE
Gasket
9905-01-110-207940092-3 INTERCHANGEABLE
Reflector,indicating,clearance
Grote Industries Inc Dba Grote Manufacturing Co Div Military Products
5825-01-508-9698400923 INTERCHANGEABLE
Receiver,radio Navigation
Garmin International, Inc. Dba Garmin
Cross-Reference Index
Part NumberManufacturer
400923 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
MS9388-238 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5331-00-165-1956INTERCHANGEABLE
O-RING
M83248/1-238
5961-00-312-4367INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5330-01-084-7827INTERCHANGEABLE
GASKET
9905-01-110-2079INTERCHANGEABLE
REFLECTOR,INDICATING,CLEARANCE
40092-3
5825-01-508-9698INTERCHANGEABLE
RECEIVER,RADIO NAVIGATION
400923

Frequently Asked Questions

What is NSN 5331-00-864-7186?

NSN 5331-00-864-7186 is a O-Ring, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-864-7186?

NSN 5331-00-864-7186 has 2 cross-referenced part numbers: 400923 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), MS9388-238 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5331-00-864-7186?

There are 5 known substitutes for 5331-00-864-7186: 5331-00-165-1956, 5961-00-312-4367, 5330-01-084-7827 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 400923?

Key specifications for 400923: Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN; Center Hole Diameter: 3.469 INCHES MINIMUM AND 3.499 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-864-7186 still in active supply?

NSN 5331-00-864-7186 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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