PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS28778-32O-Ring

Sae International Dba Sae International · NSN 5331-00-285-9847 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-285-9847 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-285-9847. Primary manufacturer part number: MS28778-32.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
  • Outside Diameter: 2.547 INCHES MINIMUM AND 2.599 INCHES MAXIMUM IN
  • Center Hole Diameter: 2.327 INCHES MINIMUM AND 2.347 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 30 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 5331-00-285-9847, 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 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 30 commercial cross-references from 19 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
NSN5331-00-285-9847
Primary Part NumberMS28778-32
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Cross-Sectional Height0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN
Outside Diameter2.547 INCHES MINIMUM AND 2.599 INCHES MAXIMUM IN
Center Hole Diameter2.327 INCHES MINIMUM AND 2.347 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
2920-00-019-0463VR105X INTERCHANGEABLE
Regulator,engine Generator
Standard Motor Products
5331-00-054-6933225132 INTERCHANGEABLE
O-Ring
The Oilgear Company Dba Jiffy Lube 213 Div Oilgear
6810-00-127-5668 INTERCHANGEABLE
Sodium Chloride
5365-00-631-1736 INTERCHANGEABLE
Spacer,plate
5331-00-803-7208200-2362-010 INTERCHANGEABLE
O-Ring
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5331-00-819-51113684372C1 INTERCHANGEABLE
O-Ring
Nd Defense Llc
5331-00-827-0326MS28778-28 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-853-23792609-6 INTERCHANGEABLE
O-Ring
Fluid Conditioning Products, Inc.
5977-01-181-4432225132 INTERCHANGEABLE
Brush,electrical Contact
Precision Scientific Petroleum Instruments Co
5331-01-255-10624410173-9320 INTERCHANGEABLE
O-Ring
Marotta Controls Inc
Cross-Reference Index
Part NumberManufacturer
AS28778-32 Society of Automotive Engineers Inc (USA)
MS28778-32ES Eriks B.v. (NLD)
3-932 N507-90 Parker Hannifin Gmbh O-Ring Division (DEU)
3-932N507-90 Parker-Hannifin Corp Div O-Ring Division (USA)
5661-0932 Zf Industrieantriebe Witten Gmbh (DEU)
7799-32 Parker Hannifin Corporation Div O-Ring Division (USA)
2251-32 Parker-Hannifin Corporation Div O-Ring Division (USA)
MS28778 32 Zf Industrieantriebe Witten Gmbh (DEU)
SR810B-90-32 Stillman Seal Corporation Div Stillman Seal Corperation (USA)
D6-32 Federal-Mogul Corp Government Sales Dept (USA)
5331PL1236077 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AS28778-32 Sae International Dba Sae International (USA)
MS28778-32 PRIMARY Sae International Dba Sae International (USA)
F-14260-32 Acushnet Rubber Company, Inc. Dba Precix (USA)
3-932N507-90 Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division (USA)
0855607600 Renault (FRA)
MILG5510 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS28778-32 Society of Automotive Engineers Inc (USA)
MS28778-32 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
3-32BUNA-N Zf Industrieantriebe Witten Gmbh (DEU)
Related Parts
2920-00-019-0463INTERCHANGEABLE
REGULATOR,ENGINE GENERATOR
VR105X
5331-00-054-6933INTERCHANGEABLE
O-RING
225132
6810-00-127-5668INTERCHANGEABLE
SODIUM CHLORIDE
5365-00-631-1736INTERCHANGEABLE
SPACER,PLATE
5331-00-803-7208INTERCHANGEABLE
O-RING
200-2362-010
5331-00-819-5111INTERCHANGEABLE
O-RING
3684372C1
5331-00-827-0326INTERCHANGEABLE
O-RING
MS28778-28
5331-00-853-2379INTERCHANGEABLE
O-RING
2609-6
5977-01-181-4432INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
225132
5331-01-255-1062INTERCHANGEABLE
O-RING
4410173-9320
5330-01-275-4019INTERCHANGEABLE
PACKING,PREFORMED
4730-01-539-9864INTERCHANGEABLE
PATCH FLTR HLDR ADA
225-13-2

Frequently Asked Questions

What is NSN 5331-00-285-9847?

NSN 5331-00-285-9847 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 5331-00-285-9847?

NSN 5331-00-285-9847 has 30 cross-referenced part numbers: AS28778-32 (Society of Automotive Engineers Inc), MS28778-32ES (Eriks B.v.), 3-932 N507-90 (Parker Hannifin Gmbh O-Ring Division), 3-932N507-90 (Parker-Hannifin Corp Div O-Ring Division), 5661-0932 (Zf Industrieantriebe Witten Gmbh) and 25 more.

What NSN replaces 5331-00-285-9847?

There are 12 known substitutes for 5331-00-285-9847: 2920-00-019-0463, 5331-00-054-6933, 6810-00-127-5668 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS28778-32?

Key specifications for MS28778-32: Cross-Sectional Height: 0.114 INCHES MINIMUM AND 0.122 INCHES MAXIMUM IN; Outside Diameter: 2.547 INCHES MINIMUM AND 2.599 INCHES MAXIMUM IN; Center Hole Diameter: 2.327 INCHES MINIMUM AND 2.347 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 4 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-285-9847 still in active supply?

NSN 5331-00-285-9847 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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