PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

02-240O-Ring

Gross Mechanical Laboratories Inc · NSN 5331-00-115-3103 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-115-3103 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-115-3103. Primary manufacturer part number: 02-240.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Gross Mechanical Laboratories Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-00-115-3103, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Gross Mechanical Laboratories Inc. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersGross Mechanical Laboratories Inc (CAGE 72922)
Technical Specifications
ParameterValue
NSN5331-00-115-3103
Primary Part Number02-240
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerGross Mechanical Laboratories Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5970-00-144-1998 INTERCHANGEABLE
Insulator,bushing
6625-00-251-7215302-0410 INTERCHANGEABLE
Ammeter
Cummins Power Generation Inc.
5342-00-670-7382214215 INTERCHANGEABLE
Handle,hand Pump
Hydro-Aire Aerospace Corp
5136-00-889-6603C67224 INTERCHANGEABLE
Diestock
Greenfield Industries Inc
3020-00-931-8221G34S35 INTERCHANGEABLE
Gear,spur
Designatronics Inc Perfect Gear and Instrument Div
3110-01-052-224205673 INTERCHANGEABLE
Bearing
Servo Products Co
5315-01-496-042602240 INTERCHANGEABLE
Pin,lock
Tru-Hitch, Inc.
Cross-Reference Index
Part NumberManufacturer
02-240 PRIMARY Gross Mechanical Laboratories Inc (USA)
01-240 Gross Mechanical Laboratories Inc (USA)
Related Parts
5970-00-144-1998INTERCHANGEABLE
INSULATOR,BUSHING
6625-00-251-7215INTERCHANGEABLE
AMMETER
302-0410
5342-00-670-7382INTERCHANGEABLE
HANDLE,HAND PUMP
214215
5136-00-889-6603INTERCHANGEABLE
DIESTOCK
C67224
3020-00-931-8221INTERCHANGEABLE
GEAR,SPUR
G34S35
3110-01-052-2242INTERCHANGEABLE
BEARING
05673
5315-01-496-0426INTERCHANGEABLE
PIN,LOCK
02240

Frequently Asked Questions

What is NSN 5331-00-115-3103?

NSN 5331-00-115-3103 is a O-Ring, manufactured by Gross Mechanical Laboratories Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-115-3103?

NSN 5331-00-115-3103 has 2 cross-referenced part numbers: 02-240 (Gross Mechanical Laboratories Inc), 01-240 (Gross Mechanical Laboratories Inc).

What NSN replaces 5331-00-115-3103?

There are 7 known substitutes for 5331-00-115-3103: 5970-00-144-1998, 6625-00-251-7215, 5342-00-670-7382 and 4 more. Verify interchangeability with system specifications before substitution.

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