PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

31211O-Ring

Parker-Hannifin Corporation Dba Racor Division Div Racor Division · NSN 5331-01-566-9130 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-566-9130 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-566-9130. Primary manufacturer part number: 31211.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Racor Division Div Racor Division
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-566-9130, 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 Racor Division Div Racor Division. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersParker-Hannifin Corporation Dba Racor Division Div Racor Division (CAGE 55752); Nd Defense Llc (CAGE 338X5)
Technical Specifications
ParameterValue
NSN5331-01-566-9130
Primary Part Number31211
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerParker-Hannifin Corporation Dba Racor Division Div Racor Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5935-00-115-2435 INTERCHANGEABLE
Connector,receptacle,electrical
5935-00-461-53863121-1 INTERCHANGEABLE
Connector,plug,electrical
Microwave Devices Inc
5961-00-988-76301850-0062-1 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
4810-01-021-974431211 INTERCHANGEABLE
Carrier,valve
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
5331-01-547-4014VA151 2-109-T05 INTERCHANGEABLE
O-Ring
Parker-Hannifin Corp Div O-Ring Division
5331-01-547-46111820878C2 INTERCHANGEABLE
O-Ring
Nd Defense Llc
5331-01-547-48841818402C2 INTERCHANGEABLE
O-Ring
Nd Defense Llc
5331-01-548-37391841581C1 INTERCHANGEABLE
O-Ring
Nd Defense Llc
5331-01-556-50081823790C1 INTERCHANGEABLE
O-Ring
Nd Defense Llc
5331-01-556-51151831398C1 INTERCHANGEABLE
O-Ring
Nd Defense Llc
Cross-Reference Index
Part NumberManufacturer
31211 PRIMARY Parker-Hannifin Corporation Dba Racor Division Div Racor Division (USA)
EMD-1444 Nd Defense Llc (USA)
1823565C1 Nd Defense Llc (USA)
Related Parts
5935-00-115-2435INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-00-461-5386INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3121-1
5961-00-988-7630INTERCHANGEABLE
TRANSISTOR
1850-0062-1
4810-01-021-9744INTERCHANGEABLE
CARRIER,VALVE
31211
5331-01-547-4014INTERCHANGEABLE
O-RING
VA151 2-109-T05
5331-01-547-4611INTERCHANGEABLE
O-RING
1820878C2
5331-01-547-4884INTERCHANGEABLE
O-RING
1818402C2
5331-01-548-3739INTERCHANGEABLE
O-RING
1841581C1
5331-01-556-5008INTERCHANGEABLE
O-RING
1823790C1
5331-01-556-5115INTERCHANGEABLE
O-RING
1831398C1
5331-01-556-5148INTERCHANGEABLE
O-RING
1839026C1
5331-01-556-5170INTERCHANGEABLE
O-RING
1846295C1

Frequently Asked Questions

What is NSN 5331-01-566-9130?

NSN 5331-01-566-9130 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Racor Division Div Racor Division, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-566-9130?

NSN 5331-01-566-9130 has 3 cross-referenced part numbers: 31211 (Parker-Hannifin Corporation Dba Racor Division Div Racor Division), EMD-1444 (Nd Defense Llc), 1823565C1 (Nd Defense Llc).

What NSN replaces 5331-01-566-9130?

There are 12 known substitutes for 5331-01-566-9130: 5935-00-115-2435, 5935-00-461-5386, 5961-00-988-7630 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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