PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SL4742PC59Ring,wearing

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-00-218-3237 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-00-218-3237 — this item is cataloged by the U.S. Government under National Stock Number 4320-00-218-3237. Primary manufacturer part number: SL4742PC59.
Features
  • Ring,wearing — FSC 4320
  • Material: COPPER ALLOY
  • Material Document and Classification: QQ-C-390,ALLOY D5 FED SPEC SINGLE MATERIAL RESPONSE
  • Surface Finish: 125.0 MICROINCHES OUTSIDE
  • Corner Shape: SQUARE ALL CORNERS
  • Surface Finish: 125.0 MICROINCHES LEFT FACE
  • Surface Finish: 125.0 MICROINCHES RIGHT FACE
  • Body Inside Diameter: 4.250 INCHES MINIMUM AND 4.251 INCHES MAXIMUM IN
Applications
  • Applications requiring Copper Alloy construction
General Description

The Ring,wearing, cataloged under National Stock Number 4320-00-218-3237, is classified within Federal Supply Class 4320 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Epd. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-00-218-3237
Primary Part NumberSL4742PC59
Item NameRing,wearing
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
MaterialCOPPER ALLOY
Material Document and ClassificationQQ-C-390,ALLOY D5 FED SPEC SINGLE MATERIAL RESPONSE
Surface Finish125.0 MICROINCHES OUTSIDE
Corner ShapeSQUARE ALL CORNERS
Surface Finish125.0 MICROINCHES LEFT FACE
Surface Finish125.0 MICROINCHES RIGHT FACE
Body Inside Diameter4.250 INCHES MINIMUM AND 4.251 INCHES MAXIMUM IN
Body StylePLAIN
Surface Finish125.0 MICROINCHES INSIDE
Body Outside Diameter4.648 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5970-00-578-086610338 INTERCHANGEABLE
Insulator,disk
Grimes Aerospace Company
5950-00-713-4792 INTERCHANGEABLE
Coil,radio Frequency
5330-01-037-714710338 INTERCHANGEABLE
Gasket
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
5365-01-278-958710338 INTERCHANGEABLE
Spacer,plate
Level 10 Industries, Inc. Div Level 10 Industries
4820-01-323-732510338 INTERCHANGEABLE
Ball,check
Liquid Metronics Inc
5330-01-503-032227-54021 1 INTERCHANGEABLE
Gasket
Brunswick Corp Dba Mercury Marine Div Mercury Marine
Cross-Reference Index
Part NumberManufacturer
177781D Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5113PC62 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4742PC59 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL4745PC59 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4585PC59 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4583PC59 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
819P Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL5113PC62-46 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
SL4585PC59 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
819P PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
SL4742PC59 Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging (USA)
177781D PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
10338 PRIMARY Rps-Fl, Inc. Dba Rps Inc (USA)
SL4583PC59 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
5970-00-578-0866INTERCHANGEABLE
INSULATOR,DISK
10338
5950-00-713-4792INTERCHANGEABLE
COIL,RADIO FREQUENCY
5330-01-037-7147INTERCHANGEABLE
GASKET
10338
5365-01-278-9587INTERCHANGEABLE
SPACER,PLATE
10338
4820-01-323-7325INTERCHANGEABLE
BALL,CHECK
10338
5330-01-503-0322INTERCHANGEABLE
GASKET
27-54021 1

Frequently Asked Questions

What is NSN 4320-00-218-3237?

NSN 4320-00-218-3237 is a Ring,wearing, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 4320 (No Item Name Available). Status: active.

What are the part numbers for NSN 4320-00-218-3237?

NSN 4320-00-218-3237 has 14 cross-referenced part numbers: 177781D (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL5113PC62 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL4742PC59 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), SL4745PC59 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging), SL4585PC59 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss Wright Engineered Pump Division Use CAGE Code 0ubg9 for Cataloging) and 9 more.

What NSN replaces 4320-00-218-3237?

There are 6 known substitutes for 4320-00-218-3237: 5970-00-578-0866, 5950-00-713-4792, 5330-01-037-7147 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SL4742PC59?

Key specifications for SL4742PC59: Material: COPPER ALLOY; Material Document and Classification: QQ-C-390,ALLOY D5 FED SPEC SINGLE MATERIAL RESPONSE; Surface Finish: 125.0 MICROINCHES OUTSIDE; Corner Shape: SQUARE ALL CORNERS. 11 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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