PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

400121O-Ring

Skf Usa Inc. Dba Skf Aerospace Sealing Solutions · NSN 5331-01-732-0890 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-732-0890 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-732-0890. Primary manufacturer part number: 400121.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 11.500 MILLIMETERS NOMINAL MM
  • Cross-Sectional Height: 7.700 MILLIMETERS NOMINAL MM
  • 3 verified cross-references
  • Primary manufacturer: Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
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 5331-01-732-0890, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Skf Usa Inc. Dba Skf Aerospace Sealing Solutions. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-732-0890
Primary Part Number400121
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerSkf Usa Inc. Dba Skf Aerospace Sealing Solutions
StatusACTIVE
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter11.500 MILLIMETERS NOMINAL MM
Cross-Sectional Height7.700 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
9540-00-111-7574 INTERCHANGEABLE
Angle,structural
5360-00-360-1029AA7T279 INTERCHANGEABLE
Spring,helical,extension
Renk America Llc Div Renk America
6105-00-912-8846R119-36A INTERCHANGEABLE
Motor,control
Kearfott Corp Div Kearfott Corporation
1660-00-992-2692 INTERCHANGEABLE
Parts Kit,block Ass
5305-01-446-405940012-1 INTERCHANGEABLE
Screw,machine
Morpac Industries, Inc Div Actuator
5305-01-538-8251 INTERCHANGEABLE
Screw,cap,hexagon Head
Cross-Reference Index
Part NumberManufacturer
SKF 400121 Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
400121 Motion Industries (USA)
400121 PRIMARY Skf Usa Inc. Dba Skf Aerospace Sealing Solutions (USA)
Related Parts
9540-00-111-7574INTERCHANGEABLE
ANGLE,STRUCTURAL
5360-00-360-1029INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
AA7T279
6105-00-912-8846INTERCHANGEABLE
MOTOR,CONTROL
R119-36A
1660-00-992-2692INTERCHANGEABLE
PARTS KIT,BLOCK ASS
5305-01-446-4059INTERCHANGEABLE
SCREW,MACHINE
40012-1
5305-01-538-8251INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD

Frequently Asked Questions

What is NSN 5331-01-732-0890?

NSN 5331-01-732-0890 is a O-Ring, manufactured by Skf Usa Inc. Dba Skf Aerospace Sealing Solutions, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-732-0890?

NSN 5331-01-732-0890 has 3 cross-referenced part numbers: SKF 400121 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions), 400121 (Motion Industries), 400121 (Skf Usa Inc. Dba Skf Aerospace Sealing Solutions).

What NSN replaces 5331-01-732-0890?

There are 6 known substitutes for 5331-01-732-0890: 9540-00-111-7574, 5360-00-360-1029, 6105-00-912-8846 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 400121?

Key specifications for 400121: Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; End Item Identification: APL UPDATE; Center Hole Diameter: 11.500 MILLIMETERS NOMINAL MM; Cross-Sectional Height: 7.700 MILLIMETERS NOMINAL MM. 5 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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