PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11377O-Ring

Bourns Inc · NSN 5331-01-504-2739 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-504-2739 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-504-2739. Primary manufacturer part number: 11377.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER FLUOROCARBON CLASS FPM
  • 2 verified cross-references
  • Primary manufacturer: Bourns Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Fluorocarbon Class Fpm construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-504-2739, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Bourns Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-504-2739
Primary Part Number11377
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerBourns Inc
StatusACTIVE
MaterialRUBBER FLUOROCARBON CLASS FPM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5310-00-167-1347 INTERCHANGEABLE
Nut,plain,hexagon
5133-00-189-9301 INTERCHANGEABLE
Drill,twist
5136-00-228-1056 INTERCHANGEABLE
Tap,thread Cutting
3030-00-294-874511377 INTERCHANGEABLE
Belt,v
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
6665-00-355-545211377 INTERCHANGEABLE
Tube,dilution
Mine Safety Appliances Company
5365-00-685-1804 INTERCHANGEABLE
Spacer,ring
1730-00-710-7314 INTERCHANGEABLE
Switch Assy,drum Up
5180-00-888-079611377 INTERCHANGEABLE
Tool Kit,general Mechanic's
Telemechanics Inc
5310-01-337-3012 INTERCHANGEABLE
Nut
2540-01-348-454811377 INTERCHANGEABLE
Seat,vehicular
Allied Systems Company Dba Allied Systems Co
Cross-Reference Index
Part NumberManufacturer
11377 Cat Pumps Corp (USA)
11377 PRIMARY Bourns Inc (USA)
Related Parts
5310-00-167-1347INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5133-00-189-9301INTERCHANGEABLE
DRILL,TWIST
5136-00-228-1056INTERCHANGEABLE
TAP,THREAD CUTTING
3030-00-294-8745INTERCHANGEABLE
BELT,V
11377
6665-00-355-5452INTERCHANGEABLE
TUBE,DILUTION
11377
5365-00-685-1804INTERCHANGEABLE
SPACER,RING
1730-00-710-7314INTERCHANGEABLE
SWITCH ASSY,DRUM UP
5180-00-888-0796INTERCHANGEABLE
TOOL KIT,GENERAL MECHANIC'S
11377
5310-01-337-3012INTERCHANGEABLE
NUT
2540-01-348-4548INTERCHANGEABLE
SEAT,VEHICULAR
11377
7010-01-647-3751INTERCHANGEABLE
COMPUTER SYSTEM,DIGITAL
11377

Frequently Asked Questions

What is NSN 5331-01-504-2739?

NSN 5331-01-504-2739 is a O-Ring, manufactured by Bourns Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-504-2739?

NSN 5331-01-504-2739 has 2 cross-referenced part numbers: 11377 (Cat Pumps Corp), 11377 (Bourns Inc).

What NSN replaces 5331-01-504-2739?

There are 11 known substitutes for 5331-01-504-2739: 5310-00-167-1347, 5133-00-189-9301, 5136-00-228-1056 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11377?

Key specifications for 11377: Part Name Assigned by Controlling Agency: O-RING,SPACER; End Item Identification: MODEL 241 3 FRAME PLUNGER PUMP; Material: RUBBER FLUOROCARBON CLASS FPM. 3 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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