PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS568-210O-Ring

Sae International Dba Sae International · NSN 5331-00-166-8402 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-166-8402 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-166-8402. Primary manufacturer part number: AS568-210.
Features
  • O-Ring — FSC 5331
  • Outside Diameter: 0.994 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • Elongation Percentage: 125 MAXIMUM
  • Center Hole Diameter: 0.724 INCHES MINIMUM AND 0.744 INCHES MAXIMUM IN
  • 46 verified cross-references
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Fluorocarbon Class Fpm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-166-8402, 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 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 46 commercial cross-references from 17 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-166-8402
Primary Part NumberAS568-210
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusCANCELLED
Outside Diameter0.994 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN
MaterialRUBBER FLUOROCARBON CLASS FPM
Hardness Rating75.0 SHORE DUROMETER A NOMINAL
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Elongation Percentage125 MAXIMUM
Center Hole Diameter0.724 INCHES MINIMUM AND 0.744 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5331-00-004-7314ABS7273 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-083-2243ARP568-210MILG23652TY1 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
4320-00-103-854227210 INTERCHANGEABLE
Crankshaft,pump
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
2915-00-118-932027210 INTERCHANGEABLE
Distributor,engine
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4730-00-165-504927017 INTERCHANGEABLE
Coupling Body,tube
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5330-00-168-5911V0747 2-210 INTERCHANGEABLE
Packing,preformed
Parker-Hannifin Corp Div O-Ring Division
5331-00-406-08837-57-074 INTERCHANGEABLE
O-Ring
Akron Brass Company
5331-00-542-1362 INTERCHANGEABLE
O-Ring
5330-00-569-37572A168 INTERCHANGEABLE
Gasket
Caterpillar Inc Div Caterpillar Defense
5331-00-620-9345122J15 INTERCHANGEABLE
O-Ring
Ross Operating Valve Co
Cross-Reference Index
Part NumberManufacturer
2601755-9 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
27210 Zf Industrieantriebe Witten Gmbh (DEU)
PRP568-210-9009 -75 Zf Industrieantriebe Witten Gmbh (DEU)
AMS7276G Society of Automotive Engineers Inc (USA)
2-210 V747-75 Parker Hannifin Gmbh O-Ring Division (DEU)
2642-820-85 ITEM 25 Naval Sea Systems Command (USA)
281684-0108ITEM Marotta Controls Inc (USA)
262389 Zf Industrieantriebe Witten Gmbh (DEU)
MS9388-210 Zf Industrieantriebe Witten Gmbh (DEU)
ARP568-210MILG2 3652TY1 Zf Industrieantriebe Witten Gmbh (DEU)
2-210V1226-75 Parker-Hannifin Corp Div O-Ring Division (USA)
10159830 Nimikkeistokeskus Ncb Finland (FIN)
2642-820-86 ITEM 25 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
2-210V747-75 Parker-Hannifin Corp Div O-Ring Division (USA)
AMS7276G Sae International Dba Sae International (USA)
AS-6227-15-V-14 A Zf Industrieantriebe Witten Gmbh (DEU)
5331PL0192484 Jednolity Indeks Materialowy - Uniform Material Index (POL)
27017 Zf Industrieantriebe Witten Gmbh (DEU)
MIL-R-83248 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
2643-820-03 ITEM 69 Electric Boat Corporation Div General Dynamics Electric Boat (USA)
Related Parts
5331-00-004-7314INTERCHANGEABLE
O-RING
ABS7273
5331-00-083-2243INTERCHANGEABLE
O-RING
ARP568-210MILG23652TY1
4320-00-103-8542INTERCHANGEABLE
CRANKSHAFT,PUMP
27210
2915-00-118-9320INTERCHANGEABLE
DISTRIBUTOR,ENGINE
27210
4730-00-165-5049INTERCHANGEABLE
COUPLING BODY,TUBE
27017
5330-00-168-5911INTERCHANGEABLE
PACKING,PREFORMED
V0747 2-210
5331-00-406-0883INTERCHANGEABLE
O-RING
7-57-074
5331-00-542-1362INTERCHANGEABLE
O-RING
5330-00-569-3757INTERCHANGEABLE
GASKET
2A168
5331-00-620-9345INTERCHANGEABLE
O-RING
122J15
5330-00-864-7183INTERCHANGEABLE
PACKING,PREFORMED
5331-01-071-6956INTERCHANGEABLE
O-RING
27017

Frequently Asked Questions

What is NSN 5331-00-166-8402?

NSN 5331-00-166-8402 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 5331-00-166-8402?

NSN 5331-00-166-8402 has 46 cross-referenced part numbers: 2601755-9 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 27210 (Zf Industrieantriebe Witten Gmbh), PRP568-210-9009 -75 (Zf Industrieantriebe Witten Gmbh), AMS7276G (Society of Automotive Engineers Inc), 2-210 V747-75 (Parker Hannifin Gmbh O-Ring Division) and 41 more.

What NSN replaces 5331-00-166-8402?

There are 12 known substitutes for 5331-00-166-8402: 5331-00-004-7314, 5331-00-083-2243, 4320-00-103-8542 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS568-210?

Key specifications for AS568-210: Outside Diameter: 0.994 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN; Material: RUBBER FLUOROCARBON CLASS FPM; Hardness Rating: 75.0 SHORE DUROMETER A NOMINAL; Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-166-8402 still in active supply?

NSN 5331-00-166-8402 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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