PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AMS-R-83285GR80/AS568-220O-Ring

Society of Automotive Engineers Inc · NSN 5331-01-533-6603 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-533-6603 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-533-6603. Primary manufacturer part number: AMS-R-83285GR80/AS568-220.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 1.347 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN
  • Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM
  • Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL
  • Material Document and Classification: SAE AMS-R-83285 ASSN STD SINGLE MATERIAL RESPONSE
  • Cross-Sectional Height: 0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
  • 7 verified cross-references
  • Primary manufacturer: Society of Automotive Engineers Inc
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 5331-01-533-6603, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Society of Automotive Engineers Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-533-6603
Primary Part NumberAMS-R-83285GR80/AS568-220
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSociety of Automotive Engineers Inc
StatusACTIVE
Center Hole Diameter1.347 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN
MaterialRUBBER ETHYLENE-PROPYLENE CLASS EPM
Hardness Rating80.0 SHORE DUROMETER A NOMINAL
Material Document and ClassificationSAE AMS-R-83285 ASSN STD SINGLE MATERIAL RESPONSE
Cross-Sectional Height0.135 INCHES MINIMUM AND 0.143 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5331-00-087-6747 INTERCHANGEABLE
O-Ring
5331-00-140-7665 INTERCHANGEABLE
O-Ring
5331-00-166-84112-220V0747-75 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5331-00-536-68352-220 N674-70 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5330-01-228-7156AMS-R-83285 GR 80 INTERCHANGEABLE
Packing,preformed
Sae International Dba Sae International
5331-01-350-4579AMS-R-83285GR80/AS568-902 INTERCHANGEABLE
O-Ring
Sae International Dba Sae International
5330-01-359-2591 INTERCHANGEABLE
Packing,preformed
5331-01-385-9503 INTERCHANGEABLE
O-Ring
5331-01-525-4179 INTERCHANGEABLE
O-Ring
5331-01-654-6628AS568-220 INTERCHANGEABLE
O-Ring
Apple Rubber Products, Inc. Dba Apple Rubber Products Inc
Cross-Reference Index
Part NumberManufacturer
AMS-R-83285GR80/AS568-220 Society of Automotive Engineers Inc (USA)
AS568-220 Society of Automotive Engineers Inc (USA)
AS568-220 Sae International Dba Sae International (USA)
MIL-R-83285GR80/AS568-220 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
AMS-R-83285GR80 Society of Automotive Engineers Inc (USA)
216-7015787ITEMF-412 Naval Sea Systems Command (USA)
AMS-R-83285GR80 Sae International Dba Sae International (USA)
Related Parts
5331-00-087-6747INTERCHANGEABLE
O-RING
5331-00-140-7665INTERCHANGEABLE
O-RING
5331-00-166-8411INTERCHANGEABLE
O-RING
2-220V0747-75
5331-00-536-6835INTERCHANGEABLE
O-RING
2-220 N674-70
5330-01-228-7156INTERCHANGEABLE
PACKING,PREFORMED
AMS-R-83285 GR 80
5331-01-350-4579INTERCHANGEABLE
O-RING
AMS-R-83285GR80/AS568-902
5330-01-359-2591INTERCHANGEABLE
PACKING,PREFORMED
5331-01-385-9503INTERCHANGEABLE
O-RING
5331-01-525-4179INTERCHANGEABLE
O-RING
5331-01-654-6628INTERCHANGEABLE
O-RING
AS568-220

Frequently Asked Questions

What is NSN 5331-01-533-6603?

NSN 5331-01-533-6603 is a O-Ring, manufactured by Society of Automotive Engineers Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-533-6603?

NSN 5331-01-533-6603 has 7 cross-referenced part numbers: AMS-R-83285GR80/AS568-220 (Society of Automotive Engineers Inc), AS568-220 (Society of Automotive Engineers Inc), AS568-220 (Sae International Dba Sae International), MIL-R-83285GR80/AS568-220 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), AMS-R-83285GR80 (Society of Automotive Engineers Inc) and 2 more.

What NSN replaces 5331-01-533-6603?

There are 10 known substitutes for 5331-01-533-6603: 5331-00-087-6747, 5331-00-140-7665, 5331-00-166-8411 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of AMS-R-83285GR80/AS568-220?

Key specifications for AMS-R-83285GR80/AS568-220: Center Hole Diameter: 1.347 INCHES MINIMUM AND 1.371 INCHES MAXIMUM IN; Material: RUBBER ETHYLENE-PROPYLENE CLASS EPM; Special Features: 81349-MIL-R-83285(USAF)/CANCELLED/ NOTICE 3, 31DEC97; Hardness Rating: 80.0 SHORE DUROMETER A NOMINAL. 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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