PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

37819O-Ring

Alfa Laval Inc · NSN 5331-01-416-5500 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-416-5500 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-416-5500. Primary manufacturer part number: 37819.
Features
  • O-Ring — FSC 5331
  • 4 verified cross-references
  • Primary manufacturer: Alfa Laval Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-416-5500, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Alfa Laval Inc. This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5331-01-416-5500
Primary Part Number37819
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerAlfa Laval Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5330-00-026-339537819 INTERCHANGEABLE
Gasket
A. O. Smith Corporation Dba a O Smith Corp
5340-00-102-1383 INTERCHANGEABLE
Clamp,synchro
3455-00-254-847515120 INTERCHANGEABLE
Cutter,milling,screw Slotting
F & D Tool Co Inc
4720-00-318-0694215901 INTERCHANGEABLE
Hose Assembly,nonmetallic
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
5910-00-507-3682 INTERCHANGEABLE
Capacitor,variable,ceramic Diele
5365-00-558-1644 INTERCHANGEABLE
Spacer,ring
5940-00-612-200417122 INTERCHANGEABLE
Terminal,lug
Stryten Energy Llc Dba Stryten Manufacturing
4820-00-621-5755N3781994 INTERCHANGEABLE
Diaphragm,valve,flat
Leslie Controls, Inc. Dba Leslie Controls Inc
5330-00-641-6975288047 INTERCHANGEABLE
Seal,plain Encased
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
4730-00-725-172317122 INTERCHANGEABLE
Strainer Element,sediment
Collins Engine Nozzles, Inc
Cross-Reference Index
Part NumberManufacturer
3781900 Alfa Laval Inc (USA)
17122 Alfa Laval Inc (USA)
37819Y Alfa Laval Inc (USA)
37819 PRIMARY Alfa Laval Inc (USA)
Related Parts
5330-00-026-3395INTERCHANGEABLE
GASKET
37819
5340-00-102-1383INTERCHANGEABLE
CLAMP,SYNCHRO
3455-00-254-8475INTERCHANGEABLE
CUTTER,MILLING,SCREW SLOTTING
15120
4720-00-318-0694INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
215901
5910-00-507-3682INTERCHANGEABLE
CAPACITOR,VARIABLE,CERAMIC DIELE
5365-00-558-1644INTERCHANGEABLE
SPACER,RING
5940-00-612-2004INTERCHANGEABLE
TERMINAL,LUG
17122
4820-00-621-5755INTERCHANGEABLE
DIAPHRAGM,VALVE,FLAT
N3781994
5330-00-641-6975INTERCHANGEABLE
SEAL,PLAIN ENCASED
288047
4730-00-725-1723INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
17122
5307-00-881-2441INTERCHANGEABLE
STUD,PLAIN
37819
3110-00-902-3758INTERCHANGEABLE
BEARING,ROLLER,NEEDLE
071006

Frequently Asked Questions

What is NSN 5331-01-416-5500?

NSN 5331-01-416-5500 is a O-Ring, manufactured by Alfa Laval Inc, classified under FSC 5331 (O-Ring). Status: cancelled.

What are the part numbers for NSN 5331-01-416-5500?

NSN 5331-01-416-5500 has 4 cross-referenced part numbers: 3781900 (Alfa Laval Inc), 17122 (Alfa Laval Inc), 37819Y (Alfa Laval Inc), 37819 (Alfa Laval Inc).

What NSN replaces 5331-01-416-5500?

There are 12 known substitutes for 5331-01-416-5500: 5330-00-026-3395, 5340-00-102-1383, 3455-00-254-8475 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 37819?

Key specifications for 37819: Special Features: STYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200;CROSS SECTIONAL SHAPE STYLE: NO.195 IRREGULAR SHAPE FROM FIIG A03200. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5331-01-416-5500 still in active supply?

NSN 5331-01-416-5500 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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