PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

61686O-Ring

Circor Aerospace, Inc. Dba Circor Aerospace Inc · NSN 5331-01-329-3765 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-329-3765 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-329-3765. Primary manufacturer part number: 61686.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: Circor Aerospace, Inc. Dba Circor Aerospace Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-329-3765, 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. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersAtkomatic Valve Co Inc (CAGE 70642); Circor Aerospace, Inc. Dba Circor Aerospace Inc (CAGE 91816)
Technical Specifications
ParameterValue
NSN5331-01-329-3765
Primary Part Number61686
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCircor Aerospace, Inc. Dba Circor Aerospace Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3040-00-076-3216 INTERCHANGEABLE
Lever,manual Control
9905-00-638-925513137 INTERCHANGEABLE
Plate,identification
Triumph Engine Control Systems Llc
7025-01-060-70545200-289 INTERCHANGEABLE
Screen,toner Sump
Raytheon Company Div Rmd Strategic
4810-01-096-105470652-02450-108 INTERCHANGEABLE
Valve,hydraulic
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
5133-01-112-9538 INTERCHANGEABLE
Drill,twist
5950-01-138-1881905876-1 INTERCHANGEABLE
Transformer,power
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
1650-01-252-473661686 INTERCHANGEABLE
Housing,liquid Pump
Parker Hannifin Corporation Div Hydraulic Systems Division
5305-01-641-253913137 INTERCHANGEABLE
Screw,cap,hexagon Head
Fastenal Company Dba Fastenal Co
5895-01-667-596513137 INTERCHANGEABLE
Case,electronic Communications E
Gatr Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
13137 Atkomatic Valve Co Inc (USA)
13137 Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
61686 PRIMARY Circor Aerospace, Inc. Dba Circor Aerospace Inc (USA)
Related Parts
3040-00-076-3216INTERCHANGEABLE
LEVER,MANUAL CONTROL
9905-00-638-9255INTERCHANGEABLE
PLATE,IDENTIFICATION
13137
7025-01-060-7054INTERCHANGEABLE
SCREEN,TONER SUMP
5200-289
4810-01-096-1054INTERCHANGEABLE
VALVE,HYDRAULIC
70652-02450-108
5133-01-112-9538INTERCHANGEABLE
DRILL,TWIST
5950-01-138-1881INTERCHANGEABLE
TRANSFORMER,POWER
905876-1
1650-01-252-4736INTERCHANGEABLE
HOUSING,LIQUID PUMP
61686
5305-01-641-2539INTERCHANGEABLE
SCREW,CAP,HEXAGON HEAD
13137
5895-01-667-5965INTERCHANGEABLE
CASE,ELECTRONIC COMMUNICATIONS E
13137

Frequently Asked Questions

What is NSN 5331-01-329-3765?

NSN 5331-01-329-3765 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 5331-01-329-3765?

NSN 5331-01-329-3765 has 3 cross-referenced part numbers: 13137 (Atkomatic Valve Co Inc), 13137 (Circor Aerospace, Inc. Dba Circor Aerospace Inc), 61686 (Circor Aerospace, Inc. Dba Circor Aerospace Inc).

What NSN replaces 5331-01-329-3765?

There are 9 known substitutes for 5331-01-329-3765: 3040-00-076-3216, 9905-00-638-9255, 7025-01-060-7054 and 6 more. Verify interchangeability with system specifications before substitution.

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