PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

221335Labyrinth Ring

Curtiss-Wright Electro-Mechanical Corporation Div Epd · NSN 4320-01-022-8624 · FSC 4320 · No Item Name Available
Verified by PartsTable
NSN 4320-01-022-8624 — this item is cataloged by the U.S. Government under National Stock Number 4320-01-022-8624. Primary manufacturer part number: 221335.
Features
  • Labyrinth Ring — FSC 4320
  • General Characteristics Item Description: BRONZE,QQ-C-390,ALLOY E8,TYPE 1 OR 2;OUTSIDE DIA 4.241 IN. MIN,0.4244 IN. MAX;INSIDE DIA 3.127 IN. MIN,3.129 IN. MAX;0.711 IN. MIN,0.716 IN. MAX THK IN
  • 2 verified cross-references
  • Primary manufacturer: Curtiss-Wright Electro-Mechanical Corporation Div Epd
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Labyrinth Ring, cataloged under National Stock Number 4320-01-022-8624, 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 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4320-01-022-8624
Primary Part Number221335
Item NameLabyrinth Ring
FSC / FSG4320 / 43 — No Item Name Available
ManufacturerCurtiss-Wright Electro-Mechanical Corporation Div Epd
StatusACTIVE
General Characteristics Item DescriptionBRONZE,QQ-C-390,ALLOY E8,TYPE 1 OR 2;OUTSIDE DIA 4.241 IN. MIN,0.4244 IN. MAX;INSIDE DIA 3.127 IN. MIN,3.129 IN. MAX;0.711 IN. MIN,0.716 IN. MAX THK IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4310-00-028-96832213-35 INTERCHANGEABLE
Ring,piston
Aqualung Usa, Inc
5998-01-521-1743221335 INTERCHANGEABLE
Backplane Assembly
Ruhle Companies, Inc.
6515-01-593-7543221.335 INTERCHANGEABLE
Bone Plate
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
221335 Toolex, Inc Dba Toolex Inc (USA)
221335 PRIMARY Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA)
Related Parts
4310-00-028-9683INTERCHANGEABLE
RING,PISTON
2213-35
5998-01-521-1743INTERCHANGEABLE
BACKPLANE ASSEMBLY
221335
6515-01-593-7543INTERCHANGEABLE
BONE PLATE
221.335

Frequently Asked Questions

What is NSN 4320-01-022-8624?

NSN 4320-01-022-8624 is a Labyrinth Ring, 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 4320-01-022-8624?

NSN 4320-01-022-8624 has 2 cross-referenced part numbers: 221335 (Toolex, Inc Dba Toolex Inc), 221335 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).

What NSN replaces 4320-01-022-8624?

There are 3 known substitutes for 4320-01-022-8624: 4310-00-028-9683, 5998-01-521-1743, 6515-01-593-7543. Verify interchangeability with system specifications before substitution.

What are the specifications of 221335?

Key specifications for 221335: General Characteristics Item Description: BRONZE,QQ-C-390,ALLOY E8,TYPE 1 OR 2;OUTSIDE DIA 4.241 IN. MIN,0.4244 IN. MAX;INSIDE DIA 3.127 IN. MIN,3.129 IN. MAX;0.711 IN. MIN,0.716 IN. MAX THK IN. 1 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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