PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T102O-Ring

Unertl John Optical Co Inc · NSN 5331-01-459-6763 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-459-6763 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-459-6763. Primary manufacturer part number: T102.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.070 INCHES NOMINAL IN
  • Material: RUBBER
  • Color: BLACK
  • Center Hole Diameter: 0.625 INCHES NOMINAL IN
  • 3 verified cross-references
  • Primary manufacturer: Unertl John Optical Co Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-459-6763, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Unertl John Optical Co Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, 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
NSN5331-01-459-6763
Primary Part NumberT102
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerUnertl John Optical Co Inc
StatusACTIVE
Cross-Sectional Height0.070 INCHES NOMINAL IN
MaterialRUBBER
ColorBLACK
Center Hole Diameter0.625 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-021-9413T120 INTERCHANGEABLE
Shielding Gasket,electronic
Parker-Hannifin Corporation Dba Pneutronics Div Chomerics Division
5940-00-192-7464T-120 INTERCHANGEABLE
Terminal,lug
Tweco Products Inc
5220-00-545-9265T120 INTERCHANGEABLE
Gage,checking
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
5950-00-645-8544 INTERCHANGEABLE
Transformer,radio Frequency
5136-00-729-5718FRS T120 INTERCHANGEABLE
Tap,thread Cutting
Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
5999-01-140-9489T120-1/50 INTERCHANGEABLE
Contact,electrical
Vector Electronics & Technology Inc
4320-01-238-7047T-120 INTERCHANGEABLE
Housing,liquid Pump
Ametek Inc
5970-01-241-0125 INTERCHANGEABLE
Insulating Compound,electrical
5950-01-354-2439T12-0 INTERCHANGEABLE
Coil,electrical
Micrometals Inc
5836-01-368-3560224915 INTERCHANGEABLE
Tape,video Recording
Maxell Corporation of America Dba (foreign Parent Is Hitachi Maxell Ltd, Osaka, Japan) Div Professional Media Products Group
Cross-Reference Index
Part NumberManufacturer
T102120 Unertl John Optical Co Inc (USA)
T102 PRIMARY Unertl John Optical Co Inc (USA)
T120 Unertl John Optical Co Inc (USA)
Related Parts
5999-00-021-9413INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
T120
5940-00-192-7464INTERCHANGEABLE
TERMINAL,LUG
T-120
5220-00-545-9265INTERCHANGEABLE
GAGE,CHECKING
T120
5950-00-645-8544INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
5136-00-729-5718INTERCHANGEABLE
TAP,THREAD CUTTING
FRS T120
5999-01-140-9489INTERCHANGEABLE
CONTACT,ELECTRICAL
T120-1/50
4320-01-238-7047INTERCHANGEABLE
HOUSING,LIQUID PUMP
T-120
5970-01-241-0125INTERCHANGEABLE
INSULATING COMPOUND,ELECTRICAL
5950-01-354-2439INTERCHANGEABLE
COIL,ELECTRICAL
T12-0
5836-01-368-3560INTERCHANGEABLE
TAPE,VIDEO RECORDING
224915
5836-01-397-4340INTERCHANGEABLE
TAPE,VIDEO RECORDING
PT120E180C
3710-01-534-9817INTERCHANGEABLE
HYDROSEEDER,SKID MOUNTED
T120

Frequently Asked Questions

What is NSN 5331-01-459-6763?

NSN 5331-01-459-6763 is a O-Ring, manufactured by Unertl John Optical Co Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-459-6763?

NSN 5331-01-459-6763 has 3 cross-referenced part numbers: T102120 (Unertl John Optical Co Inc), T102 (Unertl John Optical Co Inc), T120 (Unertl John Optical Co Inc).

What NSN replaces 5331-01-459-6763?

There are 12 known substitutes for 5331-01-459-6763: 5999-00-021-9413, 5940-00-192-7464, 5220-00-545-9265 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of T102?

Key specifications for T102: Cross-Sectional Height: 0.070 INCHES NOMINAL IN; Material: RUBBER; Color: BLACK; End Item Identification: SNIPER SCOPE, MODEL C3. 5 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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