Material Document and Classification: MIL-P-5315 MIL SPEC SINGLE MATERIAL RESPONSE
Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Identification
NSN: 5331-01-644-4146
NIIN: 016444146
FSC: 5331 — O-ring
FSG: 53 — Hardware and Abrasives
General Description
The O-Ring, cataloged under National Stock Number 5331-01-644-4146, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
Technical Specifications
Parameter
Value
NSN
5331-01-644-4146
Item Name
O-Ring
FSC / FSG
5331 / 53 — O-ring
Status
CANCELLED
Material Document and Classification
MIL-P-5315 MIL SPEC SINGLE MATERIAL RESPONSE
Material
RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition Status
CANCELLED
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 5331-01-644-4146 is a O-Ring, classified under FSC 5331, O-ring. Status: cancelled.
What NSN replaces 5331-01-644-4146?
10 possible matches (shared part number, not a government interchangeability claim): 5331-01-644-4194, 5331-01-644-4201, 5331-01-644-4219. Verify interchangeability with system specifications before substitution.
What are the specifications of 5331-01-644-4146?
Key specifications for 5331-01-644-4146: Material Document and Classification: MIL-P-5315 MIL SPEC SINGLE MATERIAL RESPONSE; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 2 specifications are documented in the U.S. Government catalog.
Is NSN 5331-01-644-4146 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.
Is NSN 5331-01-644-4146 still in active supply?
NSN 5331-01-644-4146 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.