PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21801O-Ring

Inter-Coastal Electronics, Llc · NSN 5331-01-685-9061 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-685-9061 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-685-9061. Primary manufacturer part number: 21801.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Inter-Coastal Electronics, Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-685-9061, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Inter-Coastal Electronics, Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-685-9061
Primary Part Number21801
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerInter-Coastal Electronics, Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3120-00-182-849021801 INTERCHANGEABLE
Bushing,sleeve
Regal-Beloit Corporation Dba Fasco Group Div Cassville Division
5120-00-293-001021801 INTERCHANGEABLE
Clamp,screw,quick Adjusting
Wilton Corp Wilton Tool Div
4820-00-407-64492180-1 INTERCHANGEABLE
Valve,ball
Crane Co Div Valve Div
5955-00-581-8762TC014G INTERCHANGEABLE
Oven,electrical-Electronic Compo
Bliley Technologies Inc
5950-00-760-9323240-0887-060 INTERCHANGEABLE
Coil,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5962-01-170-2333DM54LS221J INTERCHANGEABLE
Microcircuit,digital
National Semiconductor Corporation
5360-01-308-242321801 INTERCHANGEABLE
Spring
Elbitamerica, Inc.
5360-01-315-7271 INTERCHANGEABLE
Spring,helical,compression
5306-01-614-359621801 INTERCHANGEABLE
Bolt,machine
Fastenal Company Dba Fastenal Co Div Ilmon
Cross-Reference Index
Part NumberManufacturer
21801 PRIMARY Inter-Coastal Electronics, Llc (USA)
Related Parts
3120-00-182-8490INTERCHANGEABLE
BUSHING,SLEEVE
21801
5120-00-293-0010INTERCHANGEABLE
CLAMP,SCREW,QUICK ADJUSTING
21801
4820-00-407-6449INTERCHANGEABLE
VALVE,BALL
2180-1
5955-00-581-8762INTERCHANGEABLE
OVEN,ELECTRICAL-ELECTRONIC COMPO
TC014G
5950-00-760-9323INTERCHANGEABLE
COIL,RADIO FREQUENCY
240-0887-060
5962-01-170-2333INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
DM54LS221J
5360-01-308-2423INTERCHANGEABLE
SPRING
21801
5360-01-315-7271INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5306-01-614-3596INTERCHANGEABLE
BOLT,MACHINE
21801

Frequently Asked Questions

What is NSN 5331-01-685-9061?

NSN 5331-01-685-9061 is a O-Ring, manufactured by Inter-Coastal Electronics, Llc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-685-9061?

NSN 5331-01-685-9061 has 1 cross-referenced part number: 21801 (Inter-Coastal Electronics, Llc).

What NSN replaces 5331-01-685-9061?

There are 9 known substitutes for 5331-01-685-9061: 3120-00-182-8490, 5120-00-293-0010, 4820-00-407-6449 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21801?

Key specifications for 21801: End Item Identification: AIR-LAND INTEROPERABILITY GATEWAY NETWORK (ALIGN) TACTICAL HELICOPTER REHEARSAL AUTONOMOUS SAFETY AND TRAINING (THRUST) POD. 1 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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