The O-Ring, cataloged under National Stock Number 5331-01-190-1865, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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
5331-01-190-1865
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.
4320-01-297-1196AP7POSSIBLE MATCH
RING,WEARING
Possible match (shared part number)Circor Naval Solutions Llc Dba Warren Pumps
5120-01-437-2044AP7POSSIBLE MATCH
PLIERS,SLIP JOINT
Possible match (shared part number)Idsc Holdings Llc Div Snap-on Industrial, a Div. of Idsc Holdings , Llc
4310-01-527-1237AP-7POSSIBLE MATCH
FILTER ELEMENT,INTAKE AIR CLEANE
Possible match (shared part number)Rhine Air, Inc
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
AP7
5/9Secondary reference
U.S. Government activity
AP7
3/9Design control — primary reference
Hypress Technologies Inc
Related Parts
4320-01-297-1196POSSIBLE MATCH
RING,WEARING
AP7
5120-01-437-2044POSSIBLE MATCH
PLIERS,SLIP JOINT
AP7
4310-01-527-1237POSSIBLE MATCH
FILTER ELEMENT,INTAKE AIR CLEANE
AP-7
Frequently Asked Questions
What is NSN 5331-01-190-1865?
NSN 5331-01-190-1865 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
What NSN replaces 5331-01-190-1865?
3 possible matches (shared part number, not a government interchangeability claim): 4320-01-297-1196, 5120-01-437-2044, 4310-01-527-1237. Verify interchangeability with system specifications before substitution.
Is NSN 5331-01-190-1865 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.