PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25969O-Ring

Tulsa Winch, Inc. · NSN 5331-01-691-1579 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-691-1579 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-691-1579. Primary manufacturer part number: 25969.
Features
  • O-Ring — FSC 5331
  • Hardness Rating: 90.0 SHORE DUROMETER A MINIMUM AND 372.0 SHORE DUROMETER A MAXIMUM
  • 1 verified cross-reference
  • Primary manufacturer: Tulsa Winch, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-691-1579, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Tulsa Winch, Inc.. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5331-01-691-1579
Primary Part Number25969
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerTulsa Winch, Inc.
StatusACTIVE
Hardness Rating90.0 SHORE DUROMETER A MINIMUM AND 372.0 SHORE DUROMETER A MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5910-00-926-23440259690007 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Riimic, Llc Dba Sunair Electronics
5950-00-988-798482-3711-9 INTERCHANGEABLE
Transformer,radio Frequency
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
5998-01-079-157426044 INTERCHANGEABLE
Circuit Card Assembly
Cooper Crouse-Hinds Llc
5330-01-121-912011492 INTERCHANGEABLE
Gasket
Gardner Denver Water Jetting Systems, Inc. Div Engineered Package Group
4720-01-644-844425969-4FT INTERCHANGEABLE
Hose,air Duct
Clemco Industries Corp. Dba Clemco Industries Corp Div Clemco
1560-01-715-14392-5969-6 INTERCHANGEABLE
Web,structural Component,aircraf
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
25969 PRIMARY Tulsa Winch, Inc. (USA)
Related Parts
5910-00-926-2344INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
0259690007
5950-00-988-7984INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
82-3711-9
5998-01-079-1574INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
26044
5330-01-121-9120INTERCHANGEABLE
GASKET
11492
4720-01-644-8444INTERCHANGEABLE
HOSE,AIR DUCT
25969-4FT
1560-01-715-1439INTERCHANGEABLE
WEB,STRUCTURAL COMPONENT,AIRCRAF
2-5969-6

Frequently Asked Questions

What is NSN 5331-01-691-1579?

NSN 5331-01-691-1579 is a O-Ring, manufactured by Tulsa Winch, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-691-1579?

NSN 5331-01-691-1579 has 1 cross-referenced part number: 25969 (Tulsa Winch, Inc.).

What NSN replaces 5331-01-691-1579?

There are 6 known substitutes for 5331-01-691-1579: 5910-00-926-2344, 5950-00-988-7984, 5998-01-079-1574 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25969?

Key specifications for 25969: End Item Identification: WINCH,HYDRAULICS; Hardness Rating: 90.0 SHORE DUROMETER A MINIMUM AND 372.0 SHORE DUROMETER A MAXIMUM; Part Name Assigned by Controlling Agency: O-RING; Special Features: INSIDE DIAMETER 8.750 NOMINAL INCHES;CROSS SECTION 0.1875 NOMINAL INCHES;. 4 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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