PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77725-66X1PC12O-Ring

Electric Boat Corporation Div General Dynamics Electric Boat · NSN 5331-00-980-5343 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-980-5343 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-980-5343. Primary manufacturer part number: 77725-66X1PC12.
Features
  • O-Ring — FSC 5331
  • Outside Diameter: 3.012 INCHES NOMINAL IN
  • Center Hole Diameter: 2.719 INCHES MINIMUM AND 2.749 INCHES MAXIMUM IN
  • Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Electric Boat Corporation Div General Dynamics Electric Boat
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Ethylene-Propylene Class Epm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-980-5343, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Electric Boat Corporation Div General Dynamics Electric Boat. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-980-5343
Primary Part Number77725-66X1PC12
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerElectric Boat Corporation Div General Dynamics Electric Boat
StatusACTIVE
Outside Diameter3.012 INCHES NOMINAL IN
Center Hole Diameter2.719 INCHES MINIMUM AND 2.749 INCHES MAXIMUM IN
MaterialRUBBER ETHYLENE-PROPYLENE CLASS EPM
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5331-00-585-824754A126-232 INTERCHANGEABLE
O-Ring
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5330-01-304-9819 INTERCHANGEABLE
Packing,preformed
Cross-Reference Index
Part NumberManufacturer
77725-66X1PC12 PRIMARY Electric Boat Corporation Div General Dynamics Electric Boat (USA)
ARP568-232 Sae International Dba Sae International (USA)
ARP568-232 Society of Automotive Engineers Inc (USA)
Related Parts
5331-00-585-8247INTERCHANGEABLE
O-RING
54A126-232
5330-01-304-9819INTERCHANGEABLE
PACKING,PREFORMED

Frequently Asked Questions

What is NSN 5331-00-980-5343?

NSN 5331-00-980-5343 is a O-Ring, manufactured by Electric Boat Corporation Div General Dynamics Electric Boat, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-980-5343?

NSN 5331-00-980-5343 has 3 cross-referenced part numbers: 77725-66X1PC12 (Electric Boat Corporation Div General Dynamics Electric Boat), ARP568-232 (Sae International Dba Sae International), ARP568-232 (Society of Automotive Engineers Inc).

What NSN replaces 5331-00-980-5343?

There are 2 known substitutes for 5331-00-980-5343: 5331-00-585-8247, 5330-01-304-9819. Verify interchangeability with system specifications before substitution.

What are the specifications of 77725-66X1PC12?

Key specifications for 77725-66X1PC12: Outside Diameter: 3.012 INCHES NOMINAL IN; Center Hole Diameter: 2.719 INCHES MINIMUM AND 2.749 INCHES MAXIMUM IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. 4 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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