PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-G-21610Rubber Round Section

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 9320-00-892-4724 · FSC 9320 · No Item Name Available
Verified by PartsTable
NSN 9320-00-892-4724 — this item is cataloged by the U.S. Government under National Stock Number 9320-00-892-4724. Primary manufacturer part number: MIL-G-21610.
Features
  • Rubber Round Section — FSC 9320
  • Fabrication Method: SOLID
  • Departure From Cited Designator: AS MODIFIED BY ITEM NAME
  • Nondefinitive Spec/std Data: I TYPE
  • Surface Condition: SMOOTH BOTH SIDES
  • Cross Section Outside Diameter: 0.139 INCHES NOMINAL IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED
  • Material Document and Classification: MIL-G-21610, TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
Applications
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Location Not Otherwise Specified construction
General Description

The Rubber Round Section, cataloged under National Stock Number 9320-00-892-4724, is classified within Federal Supply Class 9320 (No Item Name Available) of the Nonmetallic Fabricated Materials 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 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN9320-00-892-4724
Primary Part NumberMIL-G-21610
Item NameRubber Round Section
FSC / FSG9320 / 93 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Fabrication MethodSOLID
Departure From Cited DesignatorAS MODIFIED BY ITEM NAME
Nondefinitive Spec/std DataI TYPE
Surface ConditionSMOOTH BOTH SIDES
Cross Section Outside Diameter0.139 INCHES NOMINAL IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR LOCATION NOT OTHERWISE SPECIFIED
Material Document and ClassificationMIL-G-21610, TYPE 1 MIL SPEC SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
Minimum Tensile StrengthERR-060
Nonmetallic Hardness Rating60.0 MINIMUM SHORE DUROMETER A AND 75.0 MAXIMUM SHORE DUROMETER A
Cross-Sectional Shape StyleCIRCULAR
Length48.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5331-00-058-1409820-4-50001-79 INTERCHANGEABLE
O-Ring
DC Fabricators Inc
5331-00-058-1410820-4-80002-524 INTERCHANGEABLE
O-Ring
Siemens Energy, Inc.
5331-00-058-1411820-4-80002-525 INTERCHANGEABLE
O-Ring
Siemens Energy, Inc.
5331-00-078-7889 INTERCHANGEABLE
O-Ring
5331-00-078-7890AS568-216 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5330-00-239-06852601-1479-7 INTERCHANGEABLE
Packing,preformed
Electric Boat Corporation Div General Dynamics Electric Boat
5330-00-595-6667 INTERCHANGEABLE
Packing,preformed
5331-00-892-194325176 INTERCHANGEABLE
O-Ring
Eaton Corporation Dba Eaton Inoac Div Eaton
5331-00-892-4222 INTERCHANGEABLE
O-Ring
5331-00-892-5010820-4-80002-527 INTERCHANGEABLE
O-Ring
Siemens Energy, Inc.
Cross-Reference Index
Part NumberManufacturer
MIL-G-21610 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
19-660-377PC40 Allis-Chalmers Corp (USA)
19-660-377-00PC040 Allis-Chalmers Corp (USA)
Related Parts
5331-00-058-1409INTERCHANGEABLE
O-RING
820-4-50001-79
5331-00-058-1410INTERCHANGEABLE
O-RING
820-4-80002-524
5331-00-058-1411INTERCHANGEABLE
O-RING
820-4-80002-525
5331-00-078-7889INTERCHANGEABLE
O-RING
5331-00-078-7890INTERCHANGEABLE
O-RING
AS568-216
5330-00-239-0685INTERCHANGEABLE
PACKING,PREFORMED
2601-1479-7
5330-00-595-6667INTERCHANGEABLE
PACKING,PREFORMED
5331-00-892-1943INTERCHANGEABLE
O-RING
25176
5331-00-892-4222INTERCHANGEABLE
O-RING
5331-00-892-5010INTERCHANGEABLE
O-RING
820-4-80002-527
5331-01-062-4833INTERCHANGEABLE
O-RING
4678530-0015
5331-01-075-2064INTERCHANGEABLE
O-RING
203-4678530 ITEM 0014

Frequently Asked Questions

What is NSN 9320-00-892-4724?

NSN 9320-00-892-4724 is a Rubber Round Section, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 9320 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 9320-00-892-4724?

NSN 9320-00-892-4724 has 3 cross-referenced part numbers: MIL-G-21610 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 19-660-377PC40 (Allis-Chalmers Corp), 19-660-377-00PC040 (Allis-Chalmers Corp).

What NSN replaces 9320-00-892-4724?

There are 12 known substitutes for 9320-00-892-4724: 5331-00-058-1409, 5331-00-058-1410, 5331-00-058-1411 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-G-21610?

Key specifications for MIL-G-21610: Fabrication Method: SOLID; Departure From Cited Designator: AS MODIFIED BY ITEM NAME; Nondefinitive Spec/std Data: I TYPE; Surface Condition: SMOOTH BOTH SIDES. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 9320-00-892-4724 still in active supply?

NSN 9320-00-892-4724 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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