PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

P5-4O-Ring

Star Hydraulics Llc · NSN 5331-01-394-2387 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-394-2387 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-394-2387. Primary manufacturer part number: P5-4.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Star Hydraulics Llc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-394-2387, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Star Hydraulics Llc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersStar Hydraulics Llc (CAGE 95745)
Technical Specifications
ParameterValue
NSN5331-01-394-2387
Primary Part NumberP5-4
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerStar Hydraulics Llc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5310-00-010-3031103031 INTERCHANGEABLE
Nut,plain,hexagon
Chrysler Realty Company Llc Dba Daimler Chrysler
3460-01-140-0260P-54 INTERCHANGEABLE
Pilot,counterbore
Wright Machine & Tool Co., Inc.
5925-01-189-7268P4-KCA-4C1 INTERCHANGEABLE
Circuit Breaker
La Marche Mfg Co. Dba La Marche
5120-01-266-5791P-101A INTERCHANGEABLE
Punch,drive Pin
Ngk Metals Corporation Dba N G K Berylco
5360-01-664-1976P5-4 INTERCHANGEABLE
Spring,helical,compression
Flowserve Us Company Div Flow Control Division
7710-01-721-9091P5-4 INTERCHANGEABLE
Trumpet
Schilke Music Products Inc
Cross-Reference Index
Part NumberManufacturer
P5-4 PRIMARY Star Hydraulics Llc (USA)
Related Parts
5310-00-010-3031INTERCHANGEABLE
NUT,PLAIN,HEXAGON
103031
3460-01-140-0260INTERCHANGEABLE
PILOT,COUNTERBORE
P-54
5925-01-189-7268INTERCHANGEABLE
CIRCUIT BREAKER
P4-KCA-4C1
5120-01-266-5791INTERCHANGEABLE
PUNCH,DRIVE PIN
P-101A
5360-01-664-1976INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
P5-4
7710-01-721-9091INTERCHANGEABLE
TRUMPET
P5-4

Frequently Asked Questions

What is NSN 5331-01-394-2387?

NSN 5331-01-394-2387 is a O-Ring, manufactured by Star Hydraulics Llc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-394-2387?

NSN 5331-01-394-2387 has 1 cross-referenced part number: P5-4 (Star Hydraulics Llc).

What NSN replaces 5331-01-394-2387?

There are 6 known substitutes for 5331-01-394-2387: 5310-00-010-3031, 3460-01-140-0260, 5925-01-189-7268 and 3 more. Verify interchangeability with system specifications before substitution.

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