PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4400173-1240O-Ring

Marotta Controls Inc · NSN 5331-01-243-3776 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-243-3776 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-243-3776. Primary manufacturer part number: 4400173-1240.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Marotta Controls Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-243-3776, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Marotta Controls Inc. 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.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersMarotta Controls Inc (CAGE 99657)
Technical Specifications
ParameterValue
NSN5331-01-243-3776
Primary Part Number4400173-1240
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMarotta Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5331-00-845-9685MS28775-124 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
4400173-1240 PRIMARY Marotta Controls Inc (USA)
Related Parts
5331-00-845-9685INTERCHANGEABLE
O-RING
MS28775-124

Frequently Asked Questions

What is NSN 5331-01-243-3776?

NSN 5331-01-243-3776 is a O-Ring, manufactured by Marotta Controls Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-243-3776?

NSN 5331-01-243-3776 has 1 cross-referenced part number: 4400173-1240 (Marotta Controls Inc).

What NSN replaces 5331-01-243-3776?

There is 1 known substitute for 5331-01-243-3776: 5331-00-845-9685. Verify interchangeability with system specifications before substitution.

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