PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21M-159Retainer,seal

Metrex Valve Corp. Dba Metrex Valve Corp · NSN 5330-01-632-3947 · FSC 5330 · No Item Name Available
Verified by PartsTable
NSN 5330-01-632-3947 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-632-3947. Primary manufacturer part number: 21M-159.
Features
  • Retainer,seal — FSC 5330
  • 3 verified cross-references
  • Primary manufacturer: Metrex Valve Corp. Dba Metrex Valve Corp
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The Retainer,seal, cataloged under National Stock Number 5330-01-632-3947, is classified within Federal Supply Class 5330 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Metrex Valve Corp. Dba Metrex Valve Corp. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,seal
FSC / FSG5330 — No Item Name Available (FSG 53)
ManufacturersMetrex Valve Corp. Dba Metrex Valve Corp (CAGE 21013)
Technical Specifications
ParameterValue
NSN5330-01-632-3947
Primary Part Number21M-159
Item NameRetainer,seal
FSC / FSG5330 / 53 — No Item Name Available
ManufacturerMetrex Valve Corp. Dba Metrex Valve Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4810-01-631-3564 INTERCHANGEABLE
Valve,control
5360-01-632-39528M-155 INTERCHANGEABLE
Spring,helical,compression
Metrex Valve Corp. Dba Metrex Valve Corp
5340-01-632-412245M-876-1 INTERCHANGEABLE
Handwheel
Metrex Valve Corp. Dba Metrex Valve Corp
5305-01-723-47781K6-73 INTERCHANGEABLE
Screw,machine
Metrex Valve Corp. Dba Metrex Valve Corp
5360-01-728-65878M-156 INTERCHANGEABLE
Spring,helical,compression
Metrex Valve Corp. Dba Metrex Valve Corp
Cross-Reference Index
Part NumberManufacturer
DAFC-100-FL Metrex Valve Corp. Dba Metrex Valve Corp (USA)
21M-159 PRIMARY Metrex Valve Corp. Dba Metrex Valve Corp (USA)
DAFC-100-FL-ITEM35 Metrex Valve Corp. Dba Metrex Valve Corp (USA)
Related Parts
4810-01-631-3564INTERCHANGEABLE
VALVE,CONTROL
5360-01-632-3952INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8M-155
5340-01-632-4122INTERCHANGEABLE
HANDWHEEL
45M-876-1
5305-01-723-4778INTERCHANGEABLE
SCREW,MACHINE
1K6-73
5360-01-728-6587INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
8M-156

Frequently Asked Questions

What is NSN 5330-01-632-3947?

NSN 5330-01-632-3947 is a Retainer,seal, manufactured by Metrex Valve Corp. Dba Metrex Valve Corp, classified under FSC 5330 (No Item Name Available). Status: active.

What are the part numbers for NSN 5330-01-632-3947?

NSN 5330-01-632-3947 has 3 cross-referenced part numbers: DAFC-100-FL (Metrex Valve Corp. Dba Metrex Valve Corp), 21M-159 (Metrex Valve Corp. Dba Metrex Valve Corp), DAFC-100-FL-ITEM35 (Metrex Valve Corp. Dba Metrex Valve Corp).

What NSN replaces 5330-01-632-3947?

There are 5 known substitutes for 5330-01-632-3947: 4810-01-631-3564, 5360-01-632-3952, 5340-01-632-4122 and 2 more. Verify interchangeability with system specifications before substitution.

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