PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W2T91951O-Ring

Evoqua Water Technologies Llc · NSN 5331-01-596-4597 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-596-4597 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-596-4597. Primary manufacturer part number: W2T91951.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Evoqua Water Technologies Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-596-4597, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Evoqua Water Technologies Llc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersEvoqua Water Technologies Llc (CAGE 89357)
Technical Specifications
ParameterValue
NSN5331-01-596-4597
Primary Part NumberW2T91951
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerEvoqua Water Technologies Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4730-00-011-64524-010110B INTERCHANGEABLE
Nut,tube Coupling
Sae International Dba Sae International
5210-00-223-9624234A-5 INTERCHANGEABLE
Rod,end Measuring,standard
L.s. Starrett Company (the) Div Tool Division
4320-00-267-9153C5219 INTERCHANGEABLE
Impeller,pump,centrifugal
Oberdorfer Foundries Inc
5930-00-402-2320 INTERCHANGEABLE
Switch,rotary
2590-01-243-076850977 INTERCHANGEABLE
Winch,drum,vehicle Mounting
DP Manufacturing Inc.
4720-01-435-9497 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
5/0977 Evoqua Water Technologies Llc (USA)
W2T91951 PRIMARY Evoqua Water Technologies Llc (USA)
Related Parts
4730-00-011-6452INTERCHANGEABLE
NUT,TUBE COUPLING
4-010110B
5210-00-223-9624INTERCHANGEABLE
ROD,END MEASURING,STANDARD
234A-5
4320-00-267-9153INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
C5219
5930-00-402-2320INTERCHANGEABLE
SWITCH,ROTARY
2590-01-243-0768INTERCHANGEABLE
WINCH,DRUM,VEHICLE MOUNTING
50977
4720-01-435-9497INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 5331-01-596-4597?

NSN 5331-01-596-4597 is a O-Ring, manufactured by Evoqua Water Technologies Llc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-596-4597?

NSN 5331-01-596-4597 has 2 cross-referenced part numbers: 5/0977 (Evoqua Water Technologies Llc), W2T91951 (Evoqua Water Technologies Llc).

What NSN replaces 5331-01-596-4597?

There are 6 known substitutes for 5331-01-596-4597: 4730-00-011-6452, 5210-00-223-9624, 4320-00-267-9153 and 3 more. Verify interchangeability with system specifications before substitution.

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