PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST1946-140O-Ring

Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney · NSN 5331-01-460-9039 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-460-9039 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-460-9039. Primary manufacturer part number: ST1946-140.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Center Hole Diameter: 2.220 INCHES MINIMUM AND 2.254 INCHES MAXIMUM IN
  • 7 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 5331-01-460-9039, 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 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-460-9039
Primary Part NumberST1946-140
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerRtx Corporation Dba Pratt & Whitney Div Pratt &whitney
StatusACTIVE
MaterialRUBBER FLUOROCARBON CLASS FPM
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Center Hole Diameter2.220 INCHES MINIMUM AND 2.254 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-01-194-8963AS3581-140 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
M83485/1-140 Society of Automotive Engineers Inc (USA)
AMC-R-83485 Society of Automotive Engineers Inc (USA)
AMS-R-83485/1 Sae International Dba Sae International (USA)
MIL-R-83485 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M83485/1-140 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AMS-R-83485/1 Society of Automotive Engineers Inc (USA)
ST1946-140 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5331-01-194-8963INTERCHANGEABLE
O-RING
AS3581-140

Frequently Asked Questions

What is NSN 5331-01-460-9039?

NSN 5331-01-460-9039 is a O-Ring, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-460-9039?

NSN 5331-01-460-9039 has 7 cross-referenced part numbers: M83485/1-140 (Society of Automotive Engineers Inc), AMC-R-83485 (Society of Automotive Engineers Inc), AMS-R-83485/1 (Sae International Dba Sae International), MIL-R-83485 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M83485/1-140 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 2 more.

What NSN replaces 5331-01-460-9039?

There is 1 known substitute for 5331-01-460-9039: 5331-01-194-8963. Verify interchangeability with system specifications before substitution.

What are the specifications of ST1946-140?

Key specifications for ST1946-140: Material: RUBBER FLUOROCARBON CLASS FPM; Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 2.220 INCHES MINIMUM AND 2.254 INCHES MAXIMUM IN. 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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