PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

205-4831O-Ring

Caterpillar Inc Div Caterpillar Defense · NSN 5331-01-662-3771 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-662-3771 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-662-3771. Primary manufacturer part number: 205-4831.
Features
  • O-Ring — FSC 5331
  • Supplementary Features: USED WITH 380-6934, HOSE AND TUBE AS
  • 1 verified cross-reference
  • Primary manufacturer: Caterpillar Inc Div Caterpillar Defense
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-662-3771, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-662-3771
Primary Part Number205-4831
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Supplementary FeaturesUSED WITH 380-6934, HOSE AND TUBE AS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5905-00-850-1153 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Cross-Reference Index
Part NumberManufacturer
205-4831 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
Related Parts
5905-00-850-1153INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT

Frequently Asked Questions

What is NSN 5331-01-662-3771?

NSN 5331-01-662-3771 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-662-3771?

NSN 5331-01-662-3771 has 1 cross-referenced part number: 205-4831 (Caterpillar Inc Div Caterpillar Defense).

What NSN replaces 5331-01-662-3771?

There is 1 known substitute for 5331-01-662-3771: 5905-00-850-1153. Verify interchangeability with system specifications before substitution.

What are the specifications of 205-4831?

Key specifications for 205-4831: Supplementary Features: USED WITH 380-6934, HOSE AND TUBE AS; Part Name Assigned by Controlling Agency: SEAL-O-RING; Special Features: FOR C32 MARINE ENGINE. 3 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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