NSN 5330-01-318-5331 — this item is cataloged by the U.S. Government under National Stock Number 5330-01-318-5331. Manufacturer of record part number: R3561/187.
Also searched as5330-01-318-5331 ·
5330013185331 ·
NIIN 013185331 ·
01-318-5331 ·
FSC 5330 Packing and Gasket Materials · CAGE K0192 · R3561/187 · D780-001-058
Seal Width: 0.417 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN
Sealing Element Style: VERTICAL
Housing Bore Diameter: 5.000 INCHES NOMINAL IN
Case Style: SQUARE
Accommodated Shaft Diameter: 4.000 INCHES NOMINAL IN
Material: RUBBER POLYACRYLATE CLASS ACM OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER SILICONE CLASS Q OR RUBBER FLUOROCARBON CLASS FPM SEALING ELEMENT
1 manufacturer part number on file
Identification
NSN: 5330-01-318-5331
NIIN: 013185331
FSC: 5330 — Packing and Gasket Materials
FSG: 53 — Hardware and Abrasives
Primary part number: R3561/187
Manufacturer: Spicer Speciality Axle Division
General Description
The Seal,plain Encased, cataloged under National Stock Number 5330-01-318-5331, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is Spicer Speciality Axle Division. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
5330-01-318-5331
Primary Part Number
R3561/187
Item Name
Seal,plain Encased
FSC / FSG
5330 / 53 — Packing and Gasket Materials
Manufacturer
Spicer Speciality Axle Division
Status
ACTIVE
Seal Width
0.417 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN
Sealing Element Style
VERTICAL
Housing Bore Diameter
5.000 INCHES NOMINAL IN
Case Style
SQUARE
Accommodated Shaft Diameter
4.000 INCHES NOMINAL IN
Material
RUBBER POLYACRYLATE CLASS ACM OR RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR OR RUBBER SILICONE CLASS Q OR RUBBER FLUOROCARBON CLASS FPM SEALING ELEMENT
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Other items in FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085
RETAINER
5330-00-000-0167
PARTS KIT,SEAL REPLACEMENT,MECHA
5330-00-000-5275
5330-00-000-5275 · Item name not on file
5330-00-001-1260
SEAL,NONMETALLIC SPECIAL SHAPED
5330-00-001-1833
SEAL,PLAIN ENCASED
5330-00-001-1844
GLAND,RESERVOIR,INDICATOR END
5330-00-001-1845
5330-00-001-1845 · Item name not on file
5330-00-001-1846
5330-00-001-1846 · Item name not on file
Frequently Asked Questions
What is NSN 5330-01-318-5331?
NSN 5330-01-318-5331 is a Seal,plain Encased, manufactured by Spicer Speciality Axle Division, classified under FSC 5330, Packing and Gasket Materials. Status: active.
What part numbers are listed for NSN 5330-01-318-5331?
NSN 5330-01-318-5331 has 1 manufacturer part number on file: R3561/187 (Spicer Speciality Axle Division).
What are the specifications of R3561/187?
Key specifications for R3561/187: Seal Width: 0.417 INCHES MINIMUM AND 0.449 INCHES MAXIMUM IN; Sealing Element Style: VERTICAL; Housing Bore Diameter: 5.000 INCHES NOMINAL IN; Case Style: SQUARE. 6 specifications are documented in the U.S. Government catalog.
Is NSN 5330-01-318-5331 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). 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.