PartsTable TECHNICAL DATA SHEET

NSN 4320-01-423-3422Government record, cited

Ring, Wearing4320-01-423-3422

NSN 4320-01-423-3422 · NIIN 014233422

FSC 4320 — Power and Hand Pumps · FSG 43 — Pumps and Compressors

Government record, cited

Also searched as 4320-01-423-3422 · 4320014233422 · NIIN 014233422 · 01-423-3422 · FSC 4320 Power and Hand Pumps · PL.8SCO-2 ITEM 9 · 9-0428-01 · NA1801 · NA1623

Nearby stock numbers ← 4320-01-423-3417 Sleeve, Shaft, Pump · 4320-01-423-3426 Deflector, Dirt and Liquid →

Features

Ring,wearing — FSC 4320
Body Outside Diameter: 11.875 INCHES NOMINAL IN
Material Document and Classification: ASTM B584,ALLOY 922 ASSN STD SINGLE MATERIAL RESPONSE
Body Inside Diameter: 10.897 INCHES NOMINAL IN
Material: COPPER ALLOY 922

Identification

NSN: 4320-01-423-3422
NIIN: 014233422
FSC: 4320 — Power and Hand Pumps
FSG: 43 — Pumps and Compressors

General Description

The Ring,wearing, cataloged under National Stock Number 4320-01-423-3422, is classified within Federal Supply Class 4320 (Power and Hand Pumps) of the Pumps and Compressors group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 6 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4320-01-423-3422
Item Name	Ring,wearing
FSC / FSG	4320 / 43 — Power and Hand Pumps
Status	ACTIVE
Body Outside Diameter	11.875 INCHES NOMINAL IN
Material Document and Classification	ASTM B584,ALLOY 922 ASSN STD SINGLE MATERIAL RESPONSE
Body Inside Diameter	10.897 INCHES NOMINAL IN
Material	COPPER ALLOY 922

Lifecycle & Compliance

Acquisition Status	ACTIVE
DEMIL Code	DEMIL A — No Demilitarization Required
Hazard	No hazard code in the DLA record (HMIC N)
Criticality Code	X

⇄ Related Items 6

Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.

4320-01-423-342618-0112-01 POSSIBLE MATCH

DEFLECTOR,DIRT AND LIQUID

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

4320-01-423-343918-0113-01 POSSIBLE MATCH

DEFLECTOR,DIRT AND LIQUID

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

4320-01-423-4348NA1801 POSSIBLE MATCH

PUMP,CENTRIFUGAL

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

4320-01-423-43503-0188-03 POSSIBLE MATCH

IMPELLER,PUMP,CENTRIFUGAL

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

4320-01-423-442624-0059-01 POSSIBLE MATCH

COVER,HYDRAULIC,PUMP-MOTOR

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

4320-01-423-491724-0058-01 POSSIBLE MATCH

COVER,HYDRAULIC,PUMP-MOTOR

Possible match (shared part number)Air & Liquid Systems Corporation Dba Buffalo Pumps

Cross-Reference Index

No manufacturer part numbers on file in the U.S. Government catalog.

Reference documents

Reference	Meaning
PL.8SCO-2 ITEM 9	5/2 Secondary reference U.S. Government activity
9-0428-01	3/2 Design control — primary reference U.S. Government activity
NA1801	D/9 Drawing number reference only U.S. Government activity
NA1623	D/9 Drawing number reference only U.S. Government activity

Related Parts

4320-01-423-3426POSSIBLE MATCH

DEFLECTOR,DIRT AND LIQUID

18-0112-01

4320-01-423-3439POSSIBLE MATCH

DEFLECTOR,DIRT AND LIQUID

18-0113-01

4320-01-423-4348POSSIBLE MATCH

PUMP,CENTRIFUGAL

NA1801

4320-01-423-4350POSSIBLE MATCH

IMPELLER,PUMP,CENTRIFUGAL

3-0188-03

4320-01-423-4426POSSIBLE MATCH

COVER,HYDRAULIC,PUMP-MOTOR

24-0059-01

4320-01-423-4917POSSIBLE MATCH

COVER,HYDRAULIC,PUMP-MOTOR

24-0058-01

Frequently Asked Questions

What is NSN 4320-01-423-3422?

NSN 4320-01-423-3422 is a Ring,wearing, classified under FSC 4320, Power and Hand Pumps. Status: active.

What NSN replaces 4320-01-423-3422?

6 possible matches (shared part number, not a government interchangeability claim): 4320-01-423-3426, 4320-01-423-3439, 4320-01-423-4348. Verify interchangeability with system specifications before substitution.

What are the specifications of 4320-01-423-3422?

Key specifications for 4320-01-423-3422: Body Outside Diameter: 11.875 INCHES NOMINAL IN; Material Document and Classification: ASTM B584,ALLOY 922 ASSN STD SINGLE MATERIAL RESPONSE; Overall Length: 0.687 INCHES NOMINAL IN; Body Inside Diameter: 10.897 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4320-01-423-3422 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.

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