PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

805726O-Ring

Brunswick Corp Dba Mercury Marine Div Mercury Marine · NSN 5331-01-687-0979 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-687-0979 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-687-0979. Primary manufacturer part number: 805726.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Brunswick Corp Dba Mercury Marine Div Mercury Marine
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-687-0979, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Brunswick Corp Dba Mercury Marine Div Mercury Marine. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-687-0979
Primary Part Number805726
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerBrunswick Corp Dba Mercury Marine Div Mercury Marine
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4920-00-535-1748805726 INTERCHANGEABLE
Pilot and Nut
Curtiss-Wright Controls, Inc. Div Actuation Division
Cross-Reference Index
Part NumberManufacturer
25-805726 Marine Power International Pty Ltd Brunswick Asia Pacific Group (AUS)
805726 PRIMARY Brunswick Corp Dba Mercury Marine Div Mercury Marine (USA)
Related Parts
4920-00-535-1748INTERCHANGEABLE
PILOT AND NUT
805726

Frequently Asked Questions

What is NSN 5331-01-687-0979?

NSN 5331-01-687-0979 is a O-Ring, manufactured by Brunswick Corp Dba Mercury Marine Div Mercury Marine, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-687-0979?

NSN 5331-01-687-0979 has 2 cross-referenced part numbers: 25-805726 (Marine Power International Pty Ltd Brunswick Asia Pacific Group), 805726 (Brunswick Corp Dba Mercury Marine Div Mercury Marine).

What NSN replaces 5331-01-687-0979?

There is 1 known substitute for 5331-01-687-0979: 4920-00-535-1748. Verify interchangeability with system specifications before substitution.

What are the specifications of 805726?

Key specifications for 805726: Special Features: ITEM IS A O-RING USED ON A RUDDER FOR VARIOUS MARINE 4 STROKE ENGINES; Part Name Assigned by Controlling Agency: O-RING. 2 total characteristics are documented in the Federal Logistics Information System.

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