PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7320658O-Ring

U S Army Tank Automotive Command Amsta-Im-Mm · NSN 5331-00-297-7106 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-297-7106 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-297-7106. Primary manufacturer part number: 7320658.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
  • Center Hole Diameter: 4.1155 INCHES MINIMUM AND 4.2395 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.120 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
  • 25 verified cross-references
  • Primary manufacturer: U S Army Tank Automotive Command Amsta-Im-Mm
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Isobutylene-Isoprene Class Iir construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-297-7106, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 25 commercial cross-references from 20 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-297-7106
Primary Part Number7320658
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerU S Army Tank Automotive Command Amsta-Im-Mm
StatusCANCELLED
MaterialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR
Center Hole Diameter4.1155 INCHES MINIMUM AND 4.2395 INCHES MAXIMUM IN
Cross-Sectional Height0.120 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
4820-00-030-1680510210 INTERCHANGEABLE
Seat,valve
Aar Allen Services, Inc Dba Aar Component Services Wellington
4720-00-071-168022370 INTERCHANGEABLE
Hose Assembly,metallic
Provision, Inc. Dba Provision Inc
5330-00-109-7545 INTERCHANGEABLE
Gasket
5950-00-646-2036A2930-9 INTERCHANGEABLE
Transformer,power
Entron Industries Limited Partnership Dba Entron Industries Property Div
4320-00-838-943122370 INTERCHANGEABLE
Impeller,pump,centrifugal
Curtiss-Wright Electro-Mechanical Corporation Div Epd
4730-01-038-4429SMB790709-2 INTERCHANGEABLE
Strainer Element,sediment
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
6515-01-360-213922370 INTERCHANGEABLE
Filter,bacteria,pulmonary Machin
Collins Warren E Inc Dba Ferraris Respiratory Inc
5310-01-386-847322370 INTERCHANGEABLE
Washer,lock
Moog Inc. Dba Ampac-Isp Corp
5305-01-610-65612520088C1 INTERCHANGEABLE
Screw,tapping
Nd Defense Llc
2825-01-729-392122370 INTERCHANGEABLE
Diaphragm,steam Turbine Engine
Coffin Turbo Pump Inc
Cross-Reference Index
Part NumberManufacturer
7320658 Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA)
14203P11 Taylor Machine Works Inc (USA)
10399510 Nimikkeistokeskus Ncb Finland (FIN)
7320658 PRIMARY U S Army Tank Automotive Command Amsta-Im-Mm (USA)
630G4 Diamond Reo Truck Co (USA)
M5936191 Met-Pro Corporation (USA)
7320658 General Motors Corp (USA)
401A5 Aeroil Products Co Inc (USA)
510210 Patrick Industries Patrick Metals Div (USA)
5936191 Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 (USA)
5330002977106 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
7320658 General Motors Corp Fisher Guide Div (USA)
7320658 Patrick Industries Patrick Metals Div (USA)
22370 Lockwood Corp (USA)
7320658 The Boeing Company (USA)
5936191 Fruehauf Corp (USA)
40701A2 Aeroil Products Co Inc (USA)
955632 Sasco Inc Canadian Div
118451 Am General Llc (USA)
5936191 General Motors Corp (USA)
Related Parts
4820-00-030-1680INTERCHANGEABLE
SEAT,VALVE
510210
4720-00-071-1680INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
22370
5330-00-109-7545INTERCHANGEABLE
GASKET
5950-00-646-2036INTERCHANGEABLE
TRANSFORMER,POWER
A2930-9
4320-00-838-9431INTERCHANGEABLE
IMPELLER,PUMP,CENTRIFUGAL
22370
4730-01-038-4429INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
SMB790709-2
6515-01-360-2139INTERCHANGEABLE
FILTER,BACTERIA,PULMONARY MACHIN
22370
5310-01-386-8473INTERCHANGEABLE
WASHER,LOCK
22370
5305-01-610-6561INTERCHANGEABLE
SCREW,TAPPING
2520088C1
2825-01-729-3921INTERCHANGEABLE
DIAPHRAGM,STEAM TURBINE ENGINE
22370

Frequently Asked Questions

What is NSN 5331-00-297-7106?

NSN 5331-00-297-7106 is a O-Ring, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-297-7106?

NSN 5331-00-297-7106 has 25 cross-referenced part numbers: 7320658 (Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc), 14203P11 (Taylor Machine Works Inc), 10399510 (Nimikkeistokeskus Ncb Finland), 7320658 (U S Army Tank Automotive Command Amsta-Im-Mm), 630G4 (Diamond Reo Truck Co) and 20 more.

What NSN replaces 5331-00-297-7106?

There are 10 known substitutes for 5331-00-297-7106: 4820-00-030-1680, 4720-00-071-1680, 5330-00-109-7545 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7320658?

Key specifications for 7320658: End Item Identification: HIGH-MOBILITY ARTILLERY ROCKET SYSTEM (HIMARS); Material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR; Center Hole Diameter: 4.1155 INCHES MINIMUM AND 4.2395 INCHES MAXIMUM IN; Cross-Sectional Height: 0.120 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-297-7106 still in active supply?

NSN 5331-00-297-7106 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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