PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4119-20O-Ring

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 5331-01-126-9086 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-126-9086 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-126-9086. Primary manufacturer part number: 4119-20.
Features
  • O-Ring — FSC 5331
  • Material: PLASTIC POLYTETRAFLUOROETHYLENE
  • Outside Diameter: 1.130 INCHES NOMINAL IN
  • Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
  • Center Hole Diameter: 0.918 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
  • 5 verified cross-references
  • Primary manufacturer: Circor Aerospace, Inc. Dba Circor Aerospace Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Plastic Polytetrafluoroethylene construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-126-9086, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Circor Aerospace, Inc. Dba Circor Aerospace Inc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-126-9086
Primary Part Number4119-20
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
MaterialPLASTIC POLYTETRAFLUOROETHYLENE
Outside Diameter1.130 INCHES NOMINAL IN
Cross-Sectional Height0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN
Center Hole Diameter0.918 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5915-01-014-2289673-0042-010 INTERCHANGEABLE
Filter,low Pass
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5331-01-020-526778151-119 INTERCHANGEABLE
O-Ring
Triumph Engine Control Systems Llc
5331-01-318-4561AS568-119 INTERCHANGEABLE
O-Ring
Dante Valve Company
Cross-Reference Index
Part NumberManufacturer
AS568-119 MIL-R-8791 Society of Automotive Engineers Inc (USA)
5120T-4MP-150 ITEM 4 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
4119-20 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
AS568-119 Society of Automotive Engineers Inc (USA)
AS568-119 Sae International Dba Sae International (USA)
Related Parts
5915-01-014-2289INTERCHANGEABLE
FILTER,LOW PASS
673-0042-010
5331-01-020-5267INTERCHANGEABLE
O-RING
78151-119
5331-01-318-4561INTERCHANGEABLE
O-RING
AS568-119

Frequently Asked Questions

What is NSN 5331-01-126-9086?

NSN 5331-01-126-9086 is a O-Ring, manufactured by Circor Aerospace, Inc. Dba Circor Aerospace Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-126-9086?

NSN 5331-01-126-9086 has 5 cross-referenced part numbers: AS568-119 MIL-R-8791 (Society of Automotive Engineers Inc), 5120T-4MP-150 ITEM 4 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 4119-20 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), AS568-119 (Society of Automotive Engineers Inc), AS568-119 (Sae International Dba Sae International).

What NSN replaces 5331-01-126-9086?

There are 3 known substitutes for 5331-01-126-9086: 5915-01-014-2289, 5331-01-020-5267, 5331-01-318-4561. Verify interchangeability with system specifications before substitution.

What are the specifications of 4119-20?

Key specifications for 4119-20: Material: PLASTIC POLYTETRAFLUOROETHYLENE; Outside Diameter: 1.130 INCHES NOMINAL IN; Cross-Sectional Height: 0.100 INCHES MINIMUM AND 0.106 INCHES MAXIMUM IN; Center Hole Diameter: 0.918 INCHES MINIMUM AND 0.930 INCHES MAXIMUM IN. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com