PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

202391O-Ring

Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co · NSN 5331-01-321-5970 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-321-5970 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-321-5970. Primary manufacturer part number: 202391.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-321-5970, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersKoehring Cranes and Excavators Inc Sub of Northwest Engineering Co (CAGE 8E499)
Technical Specifications
ParameterValue
NSN5331-01-321-5970
Primary Part Number202391
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerKoehring Cranes and Excavators Inc Sub of Northwest Engineering Co
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3040-00-116-0396202391 INTERCHANGEABLE
Shaft,shouldered
Wascomat of America Div of Bermil Industries Corp
5905-00-121-9932 INTERCHANGEABLE
Resistor,fixed,composition
3020-00-436-7980202-391 INTERCHANGEABLE
Gear,antibacklash,spur
Cmc Electronics Inc
1650-00-730-0964 INTERCHANGEABLE
Gasket,power Turbin
2910-01-407-2994202391 INTERCHANGEABLE
Cover,fluid Filter
Admiral Filter Company Llc
Cross-Reference Index
Part NumberManufacturer
202391 Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co (USA)
Related Parts
3040-00-116-0396INTERCHANGEABLE
SHAFT,SHOULDERED
202391
5905-00-121-9932INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
3020-00-436-7980INTERCHANGEABLE
GEAR,ANTIBACKLASH,SPUR
202-391
1650-00-730-0964INTERCHANGEABLE
GASKET,POWER TURBIN
2910-01-407-2994INTERCHANGEABLE
COVER,FLUID FILTER
202391

Frequently Asked Questions

What is NSN 5331-01-321-5970?

NSN 5331-01-321-5970 is a O-Ring, manufactured by Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-321-5970?

NSN 5331-01-321-5970 has 1 cross-referenced part number: 202391 (Koehring Cranes and Excavators Inc Sub of Northwest Engineering Co).

What NSN replaces 5331-01-321-5970?

There are 5 known substitutes for 5331-01-321-5970: 3040-00-116-0396, 5905-00-121-9932, 3020-00-436-7980 and 2 more. Verify interchangeability with system specifications before substitution.

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