PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1065300G3O-Ring

L3harris Technologies, Inc. · NSN 5331-00-990-8938 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-990-8938 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-990-8938. Primary manufacturer part number: 1065300G3.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER SILICONE CLASS Q
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Center Hole Diameter: 1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN
  • 4 verified cross-references
  • Primary manufacturer: L3harris Technologies, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Silicone Class Q construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-990-8938, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is L3harris Technologies, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-990-8938
Primary Part Number1065300G3
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerL3harris Technologies, Inc.
StatusACTIVE
MaterialRUBBER SILICONE CLASS Q
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Center Hole Diameter1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-003-0610 INTERCHANGEABLE
Screw,cap,socket Head
4820-00-031-561811030 INTERCHANGEABLE
Valve,linear,directional Control
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
6685-00-065-2041 INTERCHANGEABLE
Thermometer,self-Indicating,bime
5340-00-282-7519MS21333-34 INTERCHANGEABLE
Clamp,loop
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
3110-00-293-84431390351 INTERCHANGEABLE
Bearing,ball,annular
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4210-00-394-311611030 INTERCHANGEABLE
Bellows
Industrial Technologies and Services Llc
1005-00-566-366411030 INTERCHANGEABLE
Stop,gun Charger
Nobles Worldwide, Inc.
5330-00-641-217045200-081 INTERCHANGEABLE
Seal,plain Encased
Terex Usa, Llc Dba Terex Equipment Services
4320-01-291-965111030 INTERCHANGEABLE
Cover,hydraulic,pump-Motor
DP Mfg Inc
4730-01-317-8209110-30 INTERCHANGEABLE
Reducer,pipe
Giga, Inc.
Cross-Reference Index
Part NumberManufacturer
1065300G3 PRIMARY L3harris Technologies, Inc. (USA)
1065300G3 Airco Republic Electronics, Inc. Div the Aeronautical Instrument & Radio Co (USA)
1065300G3 Herley Chicago Dba Stewart Warner Electronics (USA)
11-030 Strohmeyer, Julie a. Dba Julie a. Strohmeyer (USA)
Related Parts
5305-00-003-0610INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
4820-00-031-5618INTERCHANGEABLE
VALVE,LINEAR,DIRECTIONAL CONTROL
11030
6685-00-065-2041INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
5340-00-282-7519INTERCHANGEABLE
CLAMP,LOOP
MS21333-34
3110-00-293-8443INTERCHANGEABLE
BEARING,BALL,ANNULAR
1390351
4210-00-394-3116INTERCHANGEABLE
BELLOWS
11030
1005-00-566-3664INTERCHANGEABLE
STOP,GUN CHARGER
11030
5330-00-641-2170INTERCHANGEABLE
SEAL,PLAIN ENCASED
45200-081
4320-01-291-9651INTERCHANGEABLE
COVER,HYDRAULIC,PUMP-MOTOR
11030
4730-01-317-8209INTERCHANGEABLE
REDUCER,PIPE
110-30
4030-01-387-9840INTERCHANGEABLE
HOOK,HOIST
11030
4820-01-483-2195INTERCHANGEABLE
VALVE,ANGLE
11030

Frequently Asked Questions

What is NSN 5331-00-990-8938?

NSN 5331-00-990-8938 is a O-Ring, manufactured by L3harris Technologies, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-990-8938?

NSN 5331-00-990-8938 has 4 cross-referenced part numbers: 1065300G3 (L3harris Technologies, Inc.), 1065300G3 (Airco Republic Electronics, Inc. Div the Aeronautical Instrument & Radio Co), 1065300G3 (Herley Chicago Dba Stewart Warner Electronics), 11-030 (Strohmeyer, Julie a. Dba Julie a. Strohmeyer).

What NSN replaces 5331-00-990-8938?

There are 12 known substitutes for 5331-00-990-8938: 5305-00-003-0610, 4820-00-031-5618, 6685-00-065-2041 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1065300G3?

Key specifications for 1065300G3: Material: RUBBER SILICONE CLASS Q; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Center Hole Diameter: 1.604 INCHES MINIMUM AND 1.624 INCHES MAXIMUM IN. 3 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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