PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS568-018O-Ring

Sae International Dba Sae International · NSN 5331-01-669-9539 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-669-9539 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-669-9539. Primary manufacturer part number: AS568-018.
Features
  • O-Ring — FSC 5331
  • Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES
  • Criticality Code Justification: ZZZY
  • 4 verified cross-references
  • Primary manufacturer: Sae International Dba Sae International
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-669-9539, 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 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-669-9539
Primary Part NumberAS568-018
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusACTIVE
Reference Number Differentiating CharacteristicsMATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES
Criticality Code JustificationZZZY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5331-00-059-3113 INTERCHANGEABLE
O-Ring
5331-00-166-0994AS3209-018 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-559-2636018-8297 INTERCHANGEABLE
O-Ring
Parker Hannifin Corporation Div O-Ring Division
5331-01-027-4693 INTERCHANGEABLE
O-Ring
5331-01-092-5503AS568-018 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
AS568-018 Sae International Dba Sae International (USA)
8599135 ITEM 81D7 Naval Inventory Control Point Mechanicsburg (USA)
AS568-018D7 Naval Inventory Control Point Mechanicsburg (USA)
8599135 ITEM 81 Naval Sea Systems Command (USA)
Related Parts
5331-00-059-3113INTERCHANGEABLE
O-RING
5331-00-166-0994INTERCHANGEABLE
O-RING
AS3209-018
5331-00-559-2636INTERCHANGEABLE
O-RING
018-8297
5331-01-027-4693INTERCHANGEABLE
O-RING
5331-01-092-5503INTERCHANGEABLE
O-RING
AS568-018

Frequently Asked Questions

What is NSN 5331-01-669-9539?

NSN 5331-01-669-9539 is a O-Ring, manufactured by Sae International Dba Sae International, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-669-9539?

NSN 5331-01-669-9539 has 4 cross-referenced part numbers: AS568-018 (Sae International Dba Sae International), 8599135 ITEM 81D7 (Naval Inventory Control Point Mechanicsburg), AS568-018D7 (Naval Inventory Control Point Mechanicsburg), 8599135 ITEM 81 (Naval Sea Systems Command).

What NSN replaces 5331-01-669-9539?

There are 5 known substitutes for 5331-01-669-9539: 5331-00-059-3113, 5331-00-166-0994, 5331-00-559-2636 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS568-018?

Key specifications for AS568-018: Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P-9290 SYSTEM CERTIFICATION PRODURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICLES AS DIFFERENTIATED BY SPECIAL TEST FEATURES; Criticality Code Justification: ZZZY. 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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