PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A-A-55549-11O-Ring

Sae International Dba Sae International · NSN 5331-00-883-8743 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-883-8743 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-883-8743. Primary manufacturer part number: A-A-55549-11.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
  • Center Hole Diameter: 0.565 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN
  • Material: RUBBER SILICONE CLASS Q
  • 5 verified cross-references
  • Primary manufacturer: Sae International Dba Sae International
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Silicone Class Q construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-883-8743, 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 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-883-8743
Primary Part NumberA-A-55549-11
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Cross-Sectional Height0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN
Center Hole Diameter0.565 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN
MaterialRUBBER SILICONE CLASS Q
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5331-00-599-2831 INTERCHANGEABLE
O-Ring
5331-00-684-5098 INTERCHANGEABLE
O-Ring
5331-00-806-3197 INTERCHANGEABLE
O-Ring
5331-00-809-3816 INTERCHANGEABLE
O-Ring
5331-00-926-9314 INTERCHANGEABLE
O-Ring
5331-01-443-8690 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
MS90064-11 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
A-A-55549-11 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
MS90064-2 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
A-A-55549-11 PRIMARY Sae International Dba Sae International (USA)
A-A-55549 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5331-00-599-2831INTERCHANGEABLE
O-RING
5331-00-684-5098INTERCHANGEABLE
O-RING
5331-00-806-3197INTERCHANGEABLE
O-RING
5331-00-809-3816INTERCHANGEABLE
O-RING
5331-00-926-9314INTERCHANGEABLE
O-RING
5331-01-443-8690INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5331-00-883-8743?

NSN 5331-00-883-8743 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 5331-00-883-8743?

NSN 5331-00-883-8743 has 5 cross-referenced part numbers: MS90064-11 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), A-A-55549-11 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS90064-2 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), A-A-55549-11 (Sae International Dba Sae International), A-A-55549 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5331-00-883-8743?

There are 6 known substitutes for 5331-00-883-8743: 5331-00-599-2831, 5331-00-684-5098, 5331-00-806-3197 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A-A-55549-11?

Key specifications for A-A-55549-11: Cross-Sectional Height: 0.057 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN; Center Hole Diameter: 0.565 INCHES MINIMUM AND 0.585 INCHES MAXIMUM IN; Material: RUBBER SILICONE CLASS Q. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-883-8743 still in active supply?

NSN 5331-00-883-8743 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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