PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11691O-Ring

Cat Pumps Corp · NSN 5331-01-424-3750 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-424-3750 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-424-3750. Primary manufacturer part number: 11691.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: Cat Pumps Corp
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-424-3750, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Cat Pumps Corp. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersSlce Watermakers (CAGE F9758); Cat Pumps Corp (CAGE 57783); Bourns Inc (CAGE 32997)
Technical Specifications
ParameterValue
NSN5331-01-424-3750
Primary Part Number11691
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCat Pumps Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4820-00-089-9886LS5-1-600-25T0400F INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
5950-00-532-7057541-3739-002 INTERCHANGEABLE
Transformer,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
4820-01-384-0962 INTERCHANGEABLE
Valve,gate
4730-01-407-292611691 INTERCHANGEABLE
Adapter,straight,tube to Hose
Barnes Group Inc. Dba Barnes Distribution
8040-01-433-5250 INTERCHANGEABLE
Adhesive
1660-01-664-67981169-1 INTERCHANGEABLE
Control Box,electrical-Electroni
Avtechtyee Inc Dba Avtech
Cross-Reference Index
Part NumberManufacturer
710018-56 Slce Watermakers (FRA)
11691 PRIMARY Cat Pumps Corp (USA)
11691 Bourns Inc (USA)
Related Parts
4820-00-089-9886INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
LS5-1-600-25T0400F
5950-00-532-7057INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
541-3739-002
4820-01-384-0962INTERCHANGEABLE
VALVE,GATE
4730-01-407-2926INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO HOSE
11691
8040-01-433-5250INTERCHANGEABLE
ADHESIVE
1660-01-664-6798INTERCHANGEABLE
CONTROL BOX,ELECTRICAL-ELECTRONI
1169-1

Frequently Asked Questions

What is NSN 5331-01-424-3750?

NSN 5331-01-424-3750 is a O-Ring, manufactured by Cat Pumps Corp, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-424-3750?

NSN 5331-01-424-3750 has 3 cross-referenced part numbers: 710018-56 (Slce Watermakers), 11691 (Cat Pumps Corp), 11691 (Bourns Inc).

What NSN replaces 5331-01-424-3750?

There are 6 known substitutes for 5331-01-424-3750: 4820-00-089-9886, 5950-00-532-7057, 4820-01-384-0962 and 3 more. Verify interchangeability with system specifications before substitution.

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