The O-Ring, cataloged under National Stock Number 5331-01-206-3211, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
O-Ring
FSC / FSG
5331 — O-ring (FSG 53)
Technical Specifications
Parameter
Value
NSN
5331-01-206-3211
Item Name
O-Ring
FSC / FSG
5331 / 53 — O-ring
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5640-01-308-0299POSSIBLE MATCH
INSULATION SLEEVING,THERMAL
Possible match (shared part number)
5330-01-480-1352651-030-9103POSSIBLE MATCH
SEAL,SHAFT,AIRCRAFT
Possible match (shared part number)Moog Military Aircraft Llc
1440-01-624-12006139POSSIBLE MATCH
PARTS KIT,MOUNT,TRIPOD,GUIDED MI
Possible match (shared part number)Teledyne Flir Unmanned Ground Systems, Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
6-139
3/9Design control — primary reference
Flotec Inc
Related Parts
5640-01-308-0299POSSIBLE MATCH
INSULATION SLEEVING,THERMAL
5330-01-480-1352POSSIBLE MATCH
SEAL,SHAFT,AIRCRAFT
651-030-9103
1440-01-624-1200POSSIBLE MATCH
PARTS KIT,MOUNT,TRIPOD,GUIDED MI
6139
Frequently Asked Questions
What is NSN 5331-01-206-3211?
NSN 5331-01-206-3211 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
What NSN replaces 5331-01-206-3211?
3 possible matches (shared part number, not a government interchangeability claim): 5640-01-308-0299, 5330-01-480-1352, 1440-01-624-1200. Verify interchangeability with system specifications before substitution.
Is NSN 5331-01-206-3211 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.