PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS28778-3O-Ring

Sae International Dba Sae International · NSN 5331-00-835-7485 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-835-7485 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-835-7485. Primary manufacturer part number: MS28778-3.
Features
  • O-Ring — FSC 5331
  • Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL
  • Center Hole Diameter: 0.296 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
  • Outside Diameter: 0.418 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 50 verified cross-references
  • Primary manufacturer: Sae International Dba Sae International
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-835-7485, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Sae International Dba Sae International. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 31 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-835-7485
Primary Part NumberMS28778-3
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Hardness Rating90.0 SHORE DUROMETER A NOMINAL
Center Hole Diameter0.296 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN
Cross-Sectional Height0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN
Outside Diameter0.418 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5995-00-006-9791179718 INTERCHANGEABLE
Cable Assembly
Telemechanics Inc
3010-00-036-3006204843 INTERCHANGEABLE
Cover,half
Rexnord Industries Llc
5331-00-054-6925 INTERCHANGEABLE
O-Ring
3120-00-336-5387D63 INTERCHANGEABLE
Bushing,sleeve
Circor Naval Solutions Llc Dba Warren Pumps
5330-00-696-0280304452 INTERCHANGEABLE
Seal,plain Encased
Garwood/feller Inc Garwood Winch Div
6625-00-729-4002 INTERCHANGEABLE
Shunt,instrument
5950-00-764-2514H166 INTERCHANGEABLE
Reactor
Magnetika Inc
5895-00-805-2212 INTERCHANGEABLE
Bushing,recessed
3110-00-899-1875T387 INTERCHANGEABLE
Bearing,roller,thrust
The Timken Corporation
5331-00-931-6756 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
GHN10093-8 Victor C. Neumann Association, Inc. (USA)
7,65X1,63SR810B90 Le Joint Francais (FRA)
3012959 Embraer Empresa Brasileira De Aeronautica Sa (BRA)
1797-18 Zf Industrieantriebe Witten Gmbh (DEU)
8034260 Us Army Aviation and Missile Command (USA)
69494-903 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
MS28778-3 Leonardo Spa Helicopters Division - Production Site (ITA)
SRB3SR810B90 Le Joint Francais (FRA)
ARP568-903MILP5 516 Zf Industrieantriebe Witten Gmbh (DEU)
V79117 Zf Industrieantriebe Witten Gmbh (DEU)
SR810B-90-3 Stillman Seal Corporation Div Stillman Seal Corperation (USA)
AN6290-3 Aeronautical Standards Group Dept of Navy and Air Force (USA)
D6-3 Federal-Mogul Corp Government Sales Dept (USA)
69494C903 Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
MS28778-3 PRIMARY Sae International Dba Sae International (USA)
757 265 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
MS28778-3 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5331008357485 E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales
462 026 Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company (USA)
R00765X163AD049 Dassault Aviation (FRA)
Related Parts
5995-00-006-9791INTERCHANGEABLE
CABLE ASSEMBLY
179718
3010-00-036-3006INTERCHANGEABLE
COVER,HALF
204843
5331-00-054-6925INTERCHANGEABLE
O-RING
3120-00-336-5387INTERCHANGEABLE
BUSHING,SLEEVE
D63
5330-00-696-0280INTERCHANGEABLE
SEAL,PLAIN ENCASED
304452
6625-00-729-4002INTERCHANGEABLE
SHUNT,INSTRUMENT
5950-00-764-2514INTERCHANGEABLE
REACTOR
H166
5895-00-805-2212INTERCHANGEABLE
BUSHING,RECESSED
3110-00-899-1875INTERCHANGEABLE
BEARING,ROLLER,THRUST
T387
5331-00-931-6756INTERCHANGEABLE
O-RING
3120-00-969-1892INTERCHANGEABLE
BUSHING,SLEEVE
5330-01-078-5006INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 5331-00-835-7485?

NSN 5331-00-835-7485 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-835-7485?

NSN 5331-00-835-7485 has 50 cross-referenced part numbers: GHN10093-8 (Victor C. Neumann Association, Inc.), 7,65X1,63SR810B90 (Le Joint Francais), 3012959 (Embraer Empresa Brasileira De Aeronautica Sa), 1797-18 (Zf Industrieantriebe Witten Gmbh), 8034260 (Us Army Aviation and Missile Command) and 45 more.

What NSN replaces 5331-00-835-7485?

There are 12 known substitutes for 5331-00-835-7485: 5995-00-006-9791, 3010-00-036-3006, 5331-00-054-6925 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS28778-3?

Key specifications for MS28778-3: Hardness Rating: 90.0 SHORE DUROMETER A NOMINAL; Center Hole Diameter: 0.296 INCHES MINIMUM AND 0.306 INCHES MAXIMUM IN; Cross-Sectional Height: 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN; Outside Diameter: 0.418 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-835-7485 still in active supply?

NSN 5331-00-835-7485 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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