PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS28778-16O-Ring

Society of Automotive Engineers Inc · NSN 5331-01-192-8639 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-192-8639 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-192-8639. Primary manufacturer part number: MS28778-16.
Features
  • O-Ring — FSC 5331
  • Outside Diameter: 1.403 INCHES NOMINAL IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Temp Rating: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
  • Cross-Sectional Height: 0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
  • Center Hole Diameter: 1.165 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
  • Criticality Code Justification: ADYT
  • Elongation Percentage: 80 MAXIMUM
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 5331-01-192-8639, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Society of Automotive Engineers Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-01-192-8639
Primary Part NumberMS28778-16
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSociety of Automotive Engineers Inc
StatusCANCELLED
Outside Diameter1.403 INCHES NOMINAL IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Temp Rating-65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF
Cross-Sectional Height0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN
Center Hole Diameter1.165 INCHES MINIMUM AND 1.177 INCHES MAXIMUM IN
Criticality Code JustificationADYT
Elongation Percentage80 MAXIMUM
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5331-00-804-569410596841-11 INTERCHANGEABLE
O-Ring
Us Army Aviation and Missile Command
5331-01-420-70633-355-8-00-903-04 INTERCHANGEABLE
O-Ring
Fluid Handling Llc
Cross-Reference Index
Part NumberManufacturer
MS28778-16 Society of Automotive Engineers Inc (USA)
MS28778-16 Sae International Dba Sae International (USA)
MS28778-16 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
695-D-7683ITEM27 Aqua-Chem, Inc. (USA)
Related Parts
5331-00-804-5694INTERCHANGEABLE
O-RING
10596841-11
5331-01-420-7063INTERCHANGEABLE
O-RING
3-355-8-00-903-04

Frequently Asked Questions

What is NSN 5331-01-192-8639?

NSN 5331-01-192-8639 is a O-Ring, manufactured by Society of Automotive Engineers Inc, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-01-192-8639?

NSN 5331-01-192-8639 has 4 cross-referenced part numbers: MS28778-16 (Society of Automotive Engineers Inc), MS28778-16 (Sae International Dba Sae International), MS28778-16 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 695-D-7683ITEM27 (Aqua-Chem, Inc.).

What NSN replaces 5331-01-192-8639?

There are 2 known substitutes for 5331-01-192-8639: 5331-00-804-5694, 5331-01-420-7063. Verify interchangeability with system specifications before substitution.

What are the specifications of MS28778-16?

Key specifications for MS28778-16: Outside Diameter: 1.403 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Temp Rating: -65.0 FAHRENHEIT AND 160.0 FAHRENHEIT DEGF; Cross-Sectional Height: 0.112 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-01-192-8639 still in active supply?

NSN 5331-01-192-8639 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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