PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MS28775-137O-Ring

Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M · NSN 5331-01-465-3947 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-465-3947 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-465-3947. Primary manufacturer part number: MS28775-137.
Features
  • O-Ring — FSC 5331
  • Criticality Code Justification: ZZZW
  • Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
  • 2 verified cross-references
  • Primary manufacturer: Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-465-3947, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-465-3947
Primary Part NumberMS28775-137
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMilitary Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Criticality Code JustificationZZZW
Departure From Cited DocumentMATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5331-00-003-6690MS28775-137 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-224-4699429559PC16 INTERCHANGEABLE
O-Ring
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5331-00-833-1429 INTERCHANGEABLE
O-Ring
5331-01-287-4822 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
MS28775-137 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
820-2179130-88 Naval Sea Systems Command (USA)
Related Parts
5331-00-003-6690INTERCHANGEABLE
O-RING
MS28775-137
5331-00-224-4699INTERCHANGEABLE
O-RING
429559PC16
5331-00-833-1429INTERCHANGEABLE
O-RING
5331-01-287-4822INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5331-01-465-3947?

NSN 5331-01-465-3947 is a O-Ring, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-465-3947?

NSN 5331-01-465-3947 has 2 cross-referenced part numbers: MS28775-137 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 820-2179130-88 (Naval Sea Systems Command).

What NSN replaces 5331-01-465-3947?

There are 4 known substitutes for 5331-01-465-3947: 5331-00-003-6690, 5331-00-224-4699, 5331-00-833-1429 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MS28775-137?

Key specifications for MS28775-137: Criticality Code Justification: ZZZW; Departure From Cited Document: MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. 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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