PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AS568-020O-Ring

Sae International Dba Sae International · NSN 5331-01-015-3371 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-015-3371 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-015-3371. Primary manufacturer part number: AS568-020.
Features
  • O-Ring — FSC 5331
  • Elongation Percentage: 200 MAXIMUM
  • Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 0.858 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Outside Diameter: 1.004 INCHES NOMINAL IN
  • 6 verified cross-references
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-015-3371, 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 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-015-3371
Primary Part NumberAS568-020
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSae International Dba Sae International
StatusACTIVE
Elongation Percentage200 MAXIMUM
Hardness Rating65.0 SHORE DUROMETER A NOMINAL
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter0.858 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Outside Diameter1.004 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5331-00-542-1981AS3578-275 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-551-8250AS3578-020 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-579-6518 INTERCHANGEABLE
O-Ring
5331-00-684-2286AS3578-254 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5331-00-882-7337 INTERCHANGEABLE
O-Ring
5331-01-021-1906 INTERCHANGEABLE
O-Ring
5331-01-098-3171 INTERCHANGEABLE
O-Ring
5331-01-284-9353 INTERCHANGEABLE
O-Ring
5331-01-388-3987 INTERCHANGEABLE
O-Ring
5331-01-666-0760 INTERCHANGEABLE
O-Ring
Cross-Reference Index
Part NumberManufacturer
AS568-020 Society of Automotive Engineers Inc (USA)
MS9021-020 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
5331PL1241454 Jednolity Indeks Materialowy - Uniform Material Index (POL)
AMS7271H Society of Automotive Engineers Inc (USA)
AMS7271H Sae International Dba Sae International (USA)
AS568-020 PRIMARY Sae International Dba Sae International (USA)
Related Parts
5331-00-542-1981INTERCHANGEABLE
O-RING
AS3578-275
5331-00-551-8250INTERCHANGEABLE
O-RING
AS3578-020
5331-00-579-6518INTERCHANGEABLE
O-RING
5331-00-684-2286INTERCHANGEABLE
O-RING
AS3578-254
5331-00-882-7337INTERCHANGEABLE
O-RING
5331-01-021-1906INTERCHANGEABLE
O-RING
5331-01-098-3171INTERCHANGEABLE
O-RING
5331-01-284-9353INTERCHANGEABLE
O-RING
5331-01-388-3987INTERCHANGEABLE
O-RING
5331-01-666-0760INTERCHANGEABLE
O-RING
5331-01-666-7455INTERCHANGEABLE
O-RING
5331-01-669-9789INTERCHANGEABLE
O-RING

Frequently Asked Questions

What is NSN 5331-01-015-3371?

NSN 5331-01-015-3371 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 5331-01-015-3371?

NSN 5331-01-015-3371 has 6 cross-referenced part numbers: AS568-020 (Society of Automotive Engineers Inc), MS9021-020 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 5331PL1241454 (Jednolity Indeks Materialowy - Uniform Material Index), AMS7271H (Society of Automotive Engineers Inc), AMS7271H (Sae International Dba Sae International) and 1 more.

What NSN replaces 5331-01-015-3371?

There are 12 known substitutes for 5331-01-015-3371: 5331-00-542-1981, 5331-00-551-8250, 5331-00-579-6518 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AS568-020?

Key specifications for AS568-020: Elongation Percentage: 200 MAXIMUM; Hardness Rating: 65.0 SHORE DUROMETER A NOMINAL; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 0.858 INCHES MINIMUM AND 0.870 INCHES MAXIMUM IN. 6 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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