PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1718O-Ring

Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division · NSN 5331-00-921-6774 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-921-6774 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-921-6774. Primary manufacturer part number: 1718.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 0.983 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Material: RUBBER SYNTHETIC
  • 2 verified cross-references
  • Primary manufacturer: Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-921-6774, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN5331-00-921-6774
Primary Part Number1718
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerParker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division
StatusACTIVE
Center Hole Diameter0.983 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MaterialRUBBER SYNTHETIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5930-00-065-7759123SCEC185-1 INTERCHANGEABLE
Switch,pressure
Northrop Grumman Systems Corporation
6675-00-222-2542 INTERCHANGEABLE
Measurer,map
5310-00-261-6189 INTERCHANGEABLE
Washer,lock
4820-00-421-04381718 INTERCHANGEABLE
Piston,poppet,valve
Droitcour Co
5905-00-463-93260816-0015 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Agilent Technologies, Inc. Div Agilent Technologies Headquarters
4330-00-469-112450127S4503-705797 INTERCHANGEABLE
Cover,fluid Filter
Naval Sea Systems Command
6320-00-480-7922171-8 INTERCHANGEABLE
Modification Kit,signal System
Lockheed Martin Corporation Div Rms
5930-00-756-8117242318R91 INTERCHANGEABLE
Switch,push-Pull
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
5360-00-845-7428 INTERCHANGEABLE
Spring,helical,extension
5905-00-879-66391718 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
Cross-Reference Index
Part NumberManufacturer
1718 Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division (USA)
1718-001 Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division (USA)
Related Parts
5930-00-065-7759INTERCHANGEABLE
SWITCH,PRESSURE
123SCEC185-1
6675-00-222-2542INTERCHANGEABLE
MEASURER,MAP
5310-00-261-6189INTERCHANGEABLE
WASHER,LOCK
4820-00-421-0438INTERCHANGEABLE
PISTON,POPPET,VALVE
1718
5905-00-463-9326INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
0816-0015
4330-00-469-1124INTERCHANGEABLE
COVER,FLUID FILTER
50127S4503-705797
6320-00-480-7922INTERCHANGEABLE
MODIFICATION KIT,SIGNAL SYSTEM
171-8
5930-00-756-8117INTERCHANGEABLE
SWITCH,PUSH-PULL
242318R91
5360-00-845-7428INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5905-00-879-6639INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
1718
5930-01-005-8845INTERCHANGEABLE
SWITCH,ROTARY
1718
4720-01-035-6601INTERCHANGEABLE
HOSE,NONMETALLIC
AE246-8

Frequently Asked Questions

What is NSN 5331-00-921-6774?

NSN 5331-00-921-6774 is a O-Ring, manufactured by Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-921-6774?

NSN 5331-00-921-6774 has 2 cross-referenced part numbers: 1718 (Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division), 1718-001 (Parker Hannifin Corporation Dba Gresen Hydraulics Div Hydraulic Valve Division).

What NSN replaces 5331-00-921-6774?

There are 12 known substitutes for 5331-00-921-6774: 5930-00-065-7759, 6675-00-222-2542, 5310-00-261-6189 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1718?

Key specifications for 1718: Center Hole Diameter: 0.983 INCHES MINIMUM AND 0.995 INCHES MAXIMUM IN; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC. 3 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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