PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

202557O-Ring

Cummins Inc. · NSN 5331-01-648-0743 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-648-0743 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-648-0743. Primary manufacturer part number: 202557.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Cummins Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-648-0743, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Cummins Inc.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-648-0743
Primary Part Number202557
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCummins Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4710-00-277-552444-8542-10-040 INTERCHANGEABLE
Tube,metallic
Us Army Aviation and Missile Command
2530-00-734-9161202557 INTERCHANGEABLE
Follower
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
Cross-Reference Index
Part NumberManufacturer
202557 PRIMARY Cummins Inc. (USA)
Related Parts
4710-00-277-5524INTERCHANGEABLE
TUBE,METALLIC
44-8542-10-040
2530-00-734-9161INTERCHANGEABLE
FOLLOWER
202557

Frequently Asked Questions

What is NSN 5331-01-648-0743?

NSN 5331-01-648-0743 is a O-Ring, manufactured by Cummins Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-648-0743?

NSN 5331-01-648-0743 has 1 cross-referenced part number: 202557 (Cummins Inc.).

What NSN replaces 5331-01-648-0743?

There are 2 known substitutes for 5331-01-648-0743: 4710-00-277-5524, 2530-00-734-9161. Verify interchangeability with system specifications before substitution.

What are the specifications of 202557?

Key specifications for 202557: End Item Identification: SYSTEM ENGINE COOLING; Part Name Assigned by Controlling Agency: SEAL O RING. 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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