PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

18037O-Ring

Caterpillar Work Tools, Inc Dba Caterpillar · NSN 5331-01-289-3126 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-289-3126 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-289-3126. Primary manufacturer part number: 18037.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Caterpillar Work Tools, Inc Dba Caterpillar
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-289-3126, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Caterpillar Work Tools, Inc Dba Caterpillar. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersCaterpillar Work Tools, Inc Dba Caterpillar (CAGE 89917)
Technical Specifications
ParameterValue
NSN5331-01-289-3126
Primary Part Number18037
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCaterpillar Work Tools, Inc Dba Caterpillar
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
3110-00-100-0223377 INTERCHANGEABLE
Cone and Rollers,tapered Roller
The Timken Corporation
3110-00-100-060055437 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
6625-00-138-5846 INTERCHANGEABLE
Ammeter
5133-00-189-9282 INTERCHANGEABLE
Drill,twist
3120-00-575-6800CB27110-001 INTERCHANGEABLE
Bushing,sleeve
Moog Inc. Dba Ampac-Isp Corp
4710-01-396-513918037 INTERCHANGEABLE
Tube Assembly,metal
Westerbeke Corporation
7710-01-528-966218037 INTERCHANGEABLE
Trumpet
Selmer Co the
5315-01-581-484318KP592 INTERCHANGEABLE
Pin,straight,headed
Oshkosh Defense Llc
Cross-Reference Index
Part NumberManufacturer
18037 Caterpillar Work Tools, Inc Dba Caterpillar (USA)
Related Parts
3110-00-100-0223INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
377
3110-00-100-0600INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
55437
6625-00-138-5846INTERCHANGEABLE
AMMETER
5133-00-189-9282INTERCHANGEABLE
DRILL,TWIST
3120-00-575-6800INTERCHANGEABLE
BUSHING,SLEEVE
CB27110-001
4710-01-396-5139INTERCHANGEABLE
TUBE ASSEMBLY,METAL
18037
7710-01-528-9662INTERCHANGEABLE
TRUMPET
18037
5315-01-581-4843INTERCHANGEABLE
PIN,STRAIGHT,HEADED
18KP592

Frequently Asked Questions

What is NSN 5331-01-289-3126?

NSN 5331-01-289-3126 is a O-Ring, manufactured by Caterpillar Work Tools, Inc Dba Caterpillar, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-289-3126?

NSN 5331-01-289-3126 has 1 cross-referenced part number: 18037 (Caterpillar Work Tools, Inc Dba Caterpillar).

What NSN replaces 5331-01-289-3126?

There are 8 known substitutes for 5331-01-289-3126: 3110-00-100-0223, 3110-00-100-0600, 6625-00-138-5846 and 5 more. Verify interchangeability with system specifications before substitution.

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