NSN 5331-00-003-9418 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-003-9418. Manufacturer of record part number: 300820.
Also searched as5331-00-003-9418 ·
5331000039418 ·
NIIN 000039418 ·
00-003-9418 ·
FSC 5331 O-ring · CAGE 53964 · 300820
The O-Ring, cataloged under National Stock Number 5331-00-003-9418, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kaydon Custom Filtration Corporation. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5331-00-003-9418
Primary Part Number
300820
Item Name
O-Ring
FSC / FSG
5331 / 53 — O-ring
Manufacturer
Kaydon Custom Filtration Corporation
Status
ACTIVE
Cross-Sectional Height
0.275 INCHES NOMINAL IN
Material
RUBBER SYNTHETIC
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items4
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5975-00-118-8844POSSIBLE MATCH
BUSHING,CABLE
Possible match (shared part number)
5977-01-214-1130300820POSSIBLE MATCH
BRUSH BLOCK BASE
Possible match (shared part number)Moog Inc.
5365-01-218-0982300820POSSIBLE MATCH
RING
Possible match (shared part number)Ships Machinery International, Inc.
3020-01-615-9352300820POSSIBLE MATCH
RATCHET WHEEL
Possible match (shared part number)Mastsystem Int'l Oy
NSN 5331-00-003-9418 is a O-Ring, manufactured by Kaydon Custom Filtration Corporation, classified under FSC 5331, O-ring. Status: active.
What part numbers are listed for NSN 5331-00-003-9418?
NSN 5331-00-003-9418 has 1 manufacturer part number on file: 300820 (Kaydon Custom Filtration Corporation).
What NSN replaces 5331-00-003-9418?
4 possible matches (shared part number, not a government interchangeability claim): 5975-00-118-8844, 5977-01-214-1130, 5365-01-218-0982. Verify interchangeability with system specifications before substitution.
What are the specifications of 300820?
Key specifications for 300820: Cross-Sectional Height: 0.275 INCHES NOMINAL IN; Material: RUBBER SYNTHETIC. 2 specifications are documented in the U.S. Government catalog.
Is NSN 5331-00-003-9418 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.