PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3P-1156O-Ring

Caterpillar Inc Div Caterpillar Defense · NSN 5331-00-385-7587 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-385-7587 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-385-7587. Primary manufacturer part number: 3P-1156.
Features
  • O-Ring — FSC 5331
  • 14 verified cross-references
  • 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 5331-00-385-7587, 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. This item has 14 commercial cross-references from 12 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersNavantia - Propulsion Y Energia Motores - Cartagena (CAGE 409BB); Navantia Sa Sme. Div Navantia Hq (CAGE 0141B); General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (CAGE 1EFH8); E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales (CAGE A00AM); Finning (uk) Ltd (CAGE U8468)
Technical Specifications
ParameterValue
NSN5331-00-385-7587
Primary Part Number3P-1156
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-371-870020001004 INTERCHANGEABLE
Transformer,power
Stocker & Yale Inc Mfe Instruments Div
4820-01-303-0075200.100 INTERCHANGEABLE
Cage,valve
Woma Corporation
6685-01-381-03922000-100 INTERCHANGEABLE
Gage,pressure,dial Indicating
Dwyer Instruments Inc
6135-01-486-797320100 INTERCHANGEABLE
Battery,nonrechargeable
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
3P-1156 Navantia - Propulsion Y Energia Motores - Cartagena (ESP)
3P-1156 Navantia Sa Sme. Div Navantia Hq (ESP)
2000100 General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp (USA)
5330003857587 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
3P-1156 Finning (uk) Ltd (GBR)
3P-1156 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
3P-1156 Westrac Pty Ltd (AUS)
2000100 Goriziane Group Spa (ITA)
3P-1156 Zf Industrieantriebe Witten Gmbh (DEU)
23KP315 Oshkosh Defense Llc (USA)
CV132945 Finning (uk) Ltd (GBR)
3P-1156 Goriziane Group Spa (ITA)
3P-1156 Westrac Equipment Pty Ltd (AUS)
902116705 General Dynamics European Land Systems-Bridge Systems Gmbh (DEU)
Related Parts
5950-00-371-8700INTERCHANGEABLE
TRANSFORMER,POWER
20001004
4820-01-303-0075INTERCHANGEABLE
CAGE,VALVE
200.100
6685-01-381-0392INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
2000-100
6135-01-486-7973INTERCHANGEABLE
BATTERY,NONRECHARGEABLE
20100

Frequently Asked Questions

What is NSN 5331-00-385-7587?

NSN 5331-00-385-7587 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 5331-00-385-7587?

NSN 5331-00-385-7587 has 14 cross-referenced part numbers: 3P-1156 (Navantia - Propulsion Y Energia Motores - Cartagena), 3P-1156 (Navantia Sa Sme. Div Navantia Hq), 2000100 (General Dynamics Land Systems - Force Protection Inc. Dba Gdls Div Gdls-Fp), 5330003857587 (E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales), 3P-1156 (Finning (uk) Ltd) and 9 more.

What NSN replaces 5331-00-385-7587?

There are 4 known substitutes for 5331-00-385-7587: 5950-00-371-8700, 4820-01-303-0075, 6685-01-381-0392 and 1 more. Verify interchangeability with system specifications before substitution.

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