PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

834-16O-Ring

Marley Pump Co Hydromatic Pumps · NSN 5331-01-021-0877 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-021-0877 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-021-0877. Primary manufacturer part number: 834-16.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Marley Pump Co Hydromatic Pumps
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-021-0877, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Marley Pump Co Hydromatic Pumps. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersMarley Pump Co Hydromatic Pumps (CAGE 31015)
Technical Specifications
ParameterValue
NSN5331-01-021-0877
Primary Part Number834-16
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMarley Pump Co Hydromatic Pumps
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-01-021-0887U5LT0303 INTERCHANGEABLE
Gasket Set
Perkins Engines Inc
4820-01-331-269983416 INTERCHANGEABLE
Stem,fluid Valve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
Cross-Reference Index
Part NumberManufacturer
834-16 Marley Pump Co Hydromatic Pumps (USA)
Related Parts
5330-01-021-0887INTERCHANGEABLE
GASKET SET
U5LT0303
4820-01-331-2699INTERCHANGEABLE
STEM,FLUID VALVE
83416

Frequently Asked Questions

What is NSN 5331-01-021-0877?

NSN 5331-01-021-0877 is a O-Ring, manufactured by Marley Pump Co Hydromatic Pumps, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-021-0877?

NSN 5331-01-021-0877 has 1 cross-referenced part number: 834-16 (Marley Pump Co Hydromatic Pumps).

What NSN replaces 5331-01-021-0877?

There are 2 known substitutes for 5331-01-021-0877: 5330-01-021-0887, 4820-01-331-2699. Verify interchangeability with system specifications before substitution.

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