PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2179 31366O-Ring

Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations · NSN 5331-01-551-5586 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-551-5586 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-551-5586. Primary manufacturer part number: 2179 31366.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-551-5586, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-551-5586
Primary Part Number2179 31366
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
9540-00-261-5107 INTERCHANGEABLE
Angle,structural
5935-00-269-446731-366 INTERCHANGEABLE
Connector,receptacle,electrical
Amphenol Corporation Div Amphenol Rf
9540-00-540-5942 INTERCHANGEABLE
Angle,structural
5310-00-576-1696 INTERCHANGEABLE
Washer,keyway
9540-00-596-3012 INTERCHANGEABLE
Angle,structural
5365-00-653-9008031366 INTERCHANGEABLE
Spacer,sleeve
Pettibone/traverse Lift L.l.c.
6680-00-758-0002GM0281 INTERCHANGEABLE
Indicator,liquid Quantity
Faria Beede Instruments, Inc. Dba Faria Beede Instruments Inc
5330-01-353-3522 INTERCHANGEABLE
Gasket
6515-01-582-87238130-S/12 INTERCHANGEABLE
Separator,toe
Pedifix, Inc.
Cross-Reference Index
Part NumberManufacturer
31366 Dana Commercial Vehicle Products, Llc (USA)
2179 31366 PRIMARY Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations (USA)
Related Parts
9540-00-261-5107INTERCHANGEABLE
ANGLE,STRUCTURAL
5935-00-269-4467INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
31-366
9540-00-540-5942INTERCHANGEABLE
ANGLE,STRUCTURAL
5310-00-576-1696INTERCHANGEABLE
WASHER,KEYWAY
9540-00-596-3012INTERCHANGEABLE
ANGLE,STRUCTURAL
5365-00-653-9008INTERCHANGEABLE
SPACER,SLEEVE
031366
6680-00-758-0002INTERCHANGEABLE
INDICATOR,LIQUID QUANTITY
GM0281
5330-01-353-3522INTERCHANGEABLE
GASKET
6515-01-582-8723INTERCHANGEABLE
SEPARATOR,TOE
8130-S/12

Frequently Asked Questions

What is NSN 5331-01-551-5586?

NSN 5331-01-551-5586 is a O-Ring, manufactured by Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-551-5586?

NSN 5331-01-551-5586 has 2 cross-referenced part numbers: 31366 (Dana Commercial Vehicle Products, Llc), 2179 31366 (Mack Trucks, Inc. Dba Macungie Operations Div Lehigh Valley Operations).

What NSN replaces 5331-01-551-5586?

There are 9 known substitutes for 5331-01-551-5586: 9540-00-261-5107, 5935-00-269-4467, 9540-00-540-5942 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2179 31366?

Key specifications for 2179 31366: Part Name Assigned by Controlling Agency: O-RING,PINION BEARING; End Item Identification: 2320-01-529-2249. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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