PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

125122O-Ring

Suntec Industries Inc Del Dba Suntec · NSN 5331-00-218-0390 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-218-0390 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-218-0390. Primary manufacturer part number: 125122.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.125 INCHES NOMINAL IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • 5 verified cross-references
  • Primary manufacturer: Suntec Industries Inc Del Dba Suntec
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 5331-00-218-0390, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Suntec Industries Inc Del Dba Suntec. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-00-218-0390
Primary Part Number125122
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSuntec Industries Inc Del Dba Suntec
StatusCANCELLED
Cross-Sectional Height0.125 INCHES NOMINAL IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5305-00-514-7698125122 INTERCHANGEABLE
Screw,machine
Telemechanics Inc
5330-00-603-4486 INTERCHANGEABLE
Packing,preformed
5331-01-006-393312522 INTERCHANGEABLE
O-Ring
Sundstrand Corp
2520-01-010-6107125122 INTERCHANGEABLE
Shaft,axle,automotive
Dana Off Highway Products, Llc
5365-01-271-9627 INTERCHANGEABLE
Spacer,sleeve
Cross-Reference Index
Part NumberManufacturer
3627-16-03-70 Parker-Hannifin Corp Div O-Ring Division (USA)
3627-16-03-70 Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
123652 Sundstrand Corp Sundstrand Hydraulics Div (USA)
125122 PRIMARY Suntec Industries Inc Del Dba Suntec (USA)
3627-16-03-70 Hamilton Sundstrand Corporation (USA)
Related Parts
5305-00-514-7698INTERCHANGEABLE
SCREW,MACHINE
125122
5330-00-603-4486INTERCHANGEABLE
PACKING,PREFORMED
5331-01-006-3933INTERCHANGEABLE
O-RING
12522
2520-01-010-6107INTERCHANGEABLE
SHAFT,AXLE,AUTOMOTIVE
125122
5365-01-271-9627INTERCHANGEABLE
SPACER,SLEEVE

Frequently Asked Questions

What is NSN 5331-00-218-0390?

NSN 5331-00-218-0390 is a O-Ring, manufactured by Suntec Industries Inc Del Dba Suntec, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-00-218-0390?

NSN 5331-00-218-0390 has 5 cross-referenced part numbers: 3627-16-03-70 (Parker-Hannifin Corp Div O-Ring Division), 3627-16-03-70 (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 123652 (Sundstrand Corp Sundstrand Hydraulics Div), 125122 (Suntec Industries Inc Del Dba Suntec), 3627-16-03-70 (Hamilton Sundstrand Corporation).

What NSN replaces 5331-00-218-0390?

There are 5 known substitutes for 5331-00-218-0390: 5305-00-514-7698, 5330-00-603-4486, 5331-01-006-3933 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 125122?

Key specifications for 125122: Cross-Sectional Height: 0.125 INCHES NOMINAL IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-00-218-0390 still in active supply?

NSN 5331-00-218-0390 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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