PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILG21610TYPEIO-Ring

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5331-00-892-1917 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-892-1917 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-892-1917. Primary manufacturer part number: MILG21610TYPEI.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.125 INCHES NOMINAL IN
  • Material: RUBBER SYNTHETIC
  • Center Hole Diameter: 1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN
  • Outside Diameter: 1.699 INCHES NOMINAL IN
  • 7 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-892-1917, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-892-1917
Primary Part NumberMILG21610TYPEI
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Cross-Sectional Height0.125 INCHES NOMINAL IN
MaterialRUBBER SYNTHETIC
Center Hole Diameter1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN
Outside Diameter1.699 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5330-00-595-6669 INTERCHANGEABLE
Packing,preformed
5331-00-623-1119AS568C-221 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-925-43345655PC INTERCHANGEABLE
O-Ring
Romac Industries, Inc. Dba Hays Fluid Controls Div Hays Fluid Controls Division
5331-01-486-1739AS568-221 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-01-734-3231515-8837031-F121 INTERCHANGEABLE
O-Ring
Naval Sea Systems Command
Cross-Reference Index
Part NumberManufacturer
MILG21610TYPEI Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AS568-221 Sae International Dba Sae International (USA)
AS568B-221 Society of Automotive Engineers Inc (USA)
106A2989P2 Zf Industrieantriebe Witten Gmbh (DEU)
106A2989PC2 General Electric Company (USA)
AS568-221 Society of Automotive Engineers Inc (USA)
44243-1-5PT40 Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
5330-00-595-6669INTERCHANGEABLE
PACKING,PREFORMED
5331-00-623-1119INTERCHANGEABLE
O-RING
AS568C-221
5331-00-925-4334INTERCHANGEABLE
O-RING
5655PC
5331-01-486-1739INTERCHANGEABLE
O-RING
AS568-221
5331-01-734-3231INTERCHANGEABLE
O-RING
515-8837031-F121

Frequently Asked Questions

What is NSN 5331-00-892-1917?

NSN 5331-00-892-1917 is a O-Ring, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-892-1917?

NSN 5331-00-892-1917 has 7 cross-referenced part numbers: MILG21610TYPEI (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AS568-221 (Sae International Dba Sae International), AS568B-221 (Society of Automotive Engineers Inc), 106A2989P2 (Zf Industrieantriebe Witten Gmbh), 106A2989PC2 (General Electric Company) and 2 more.

What NSN replaces 5331-00-892-1917?

There are 5 known substitutes for 5331-00-892-1917: 5330-00-595-6669, 5331-00-623-1119, 5331-00-925-4334 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILG21610TYPEI?

Key specifications for MILG21610TYPEI: Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC; Center Hole Diameter: 1.409 INCHES MINIMUM AND 1.433 INCHES MAXIMUM IN; Outside Diameter: 1.699 INCHES NOMINAL IN. 4 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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