PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

320944O-Ring

Fmc Technologies Inc Dba Fmc Fluid Control · NSN 5331-01-597-2288 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-597-2288 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-597-2288. Primary manufacturer part number: 320944.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.139 INCHES NOMINAL IN
  • Center Hole Diameter: 3.109 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Fmc Technologies Inc Dba Fmc Fluid Control
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-597-2288, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Fmc Technologies Inc Dba Fmc Fluid Control. Government technical data includes 2 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-597-2288
Primary Part Number320944
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerFmc Technologies Inc Dba Fmc Fluid Control
StatusACTIVE
Cross-Sectional Height0.139 INCHES NOMINAL IN
Center Hole Diameter3.109 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4320-00-248-91042191-6 INTERCHANGEABLE
Pump Unit,centrifugal
Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
320944 PRIMARY Fmc Technologies Inc Dba Fmc Fluid Control (USA)
Related Parts
4320-00-248-9104INTERCHANGEABLE
PUMP UNIT,CENTRIFUGAL
2191-6

Frequently Asked Questions

What is NSN 5331-01-597-2288?

NSN 5331-01-597-2288 is a O-Ring, manufactured by Fmc Technologies Inc Dba Fmc Fluid Control, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-597-2288?

NSN 5331-01-597-2288 has 1 cross-referenced part number: 320944 (Fmc Technologies Inc Dba Fmc Fluid Control).

What NSN replaces 5331-01-597-2288?

There is 1 known substitute for 5331-01-597-2288: 4320-00-248-9104. Verify interchangeability with system specifications before substitution.

What are the specifications of 320944?

Key specifications for 320944: Cross-Sectional Height: 0.139 INCHES NOMINAL IN; Center Hole Diameter: 3.109 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: O-RING; Special Features: UNIFORM NO. 235, PTFE. 4 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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