The O-Ring, cataloged under National Stock Number 5331-01-188-9418, 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Supply Class 5331 (O-ring) of the Hardware and Abrasives group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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
5331-01-188-9418
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 Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4320-01-258-223827187POSSIBLE MATCH
PUMP UNIT,RECIPROCATING
Possible match (shared part number)Haskel International, Llc Dba Haskel International, Llc
3510-01-421-590127187POSSIBLE MATCH
FLINGER
Possible match (shared part number)Alliance Laundry Systems Llc
6220-01-562-913527187POSSIBLE MATCH
STERN LIGHT ASSY
Possible match (shared part number)Willard Marine, Inc.
6145-01-680-350427187POSSIBLE MATCH
CABLE,SPECIAL PURPOSE,ELECTRICAL
Possible match (shared part number)Ortronics, Inc. Dba Ortronics Div Legrand Data Communications
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
27187
3/9Design control — primary reference
Dana Corp Tyrone Hydraulics Inc Div
Related Parts
4320-01-258-2238POSSIBLE MATCH
PUMP UNIT,RECIPROCATING
27187
3510-01-421-5901POSSIBLE MATCH
FLINGER
27187
6220-01-562-9135POSSIBLE MATCH
STERN LIGHT ASSY
27187
6145-01-680-3504POSSIBLE MATCH
CABLE,SPECIAL PURPOSE,ELECTRICAL
27187
Frequently Asked Questions
What is NSN 5331-01-188-9418?
NSN 5331-01-188-9418 is a O-Ring, classified under FSC 5331, O-ring. Status: active.
What NSN replaces 5331-01-188-9418?
4 possible matches (shared part number, not a government interchangeability claim): 4320-01-258-2238, 3510-01-421-5901, 6220-01-562-9135. Verify interchangeability with system specifications before substitution.
Is NSN 5331-01-188-9418 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.