PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50388-3O-Ring

Triumph Thermal Systems - Maryland, Inc. · NSN 5331-00-807-4053 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-807-4053 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-807-4053. Primary manufacturer part number: 50388-3.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER SYNTHETIC
  • Cross-Sectional Height: 0.062 INCHES NOMINAL IN
  • 5 verified cross-references
  • Primary manufacturer: Triumph Thermal Systems - Maryland, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Synthetic construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-807-4053, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Triumph Thermal Systems - Maryland, Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN5331-00-807-4053
Primary Part Number50388-3
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerTriumph Thermal Systems - Maryland, Inc.
StatusACTIVE
MaterialRUBBER SYNTHETIC
Cross-Sectional Height0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3655-00-029-0216 INTERCHANGEABLE
Body,outlet Valve
6130-00-105-9996 INTERCHANGEABLE
Charger,battery
5310-00-163-1920 INTERCHANGEABLE
Nut,self-Locking,plate
5340-00-198-6812E1127-2-10 INTERCHANGEABLE
Clamp,loop
Breeze-Eastern Llc
4140-00-224-914926596 INTERCHANGEABLE
Impeller,fan,axial
Regal-Beloit Corporation Dba Fasco Group Div Cassville Division
5305-00-282-7651 INTERCHANGEABLE
Setscrew
2805-00-353-760226596 INTERCHANGEABLE
Crankshaft
Briggs and Stratton Corp
5935-00-767-187531-2677-1 INTERCHANGEABLE
Connector,receptacle,electrical
Amphenol Corporation Div Amphenol Rf
5935-00-998-4254978039-1 INTERCHANGEABLE
Connector,receptacle,electrical
Raytheon Company Dba Raytheon
6625-01-090-575126596 INTERCHANGEABLE
Ammeter
Transistor Devices Inc Div Astrodyne Tdi High Power Business Unit
Cross-Reference Index
Part NumberManufacturer
50388-5 Strohmeyer, Julie a. Dba Julie a. Strohmeyer (USA)
50388-3 PRIMARY Triumph Thermal Systems - Maryland, Inc. (USA)
26771 Triumph Thermal Systems - Maryland, Inc. (USA)
50388-5 Triumph Thermal Systems - Maryland, Inc. (USA)
26596 Triumph Thermal Systems - Maryland, Inc. (USA)
Related Parts
3655-00-029-0216INTERCHANGEABLE
BODY,OUTLET VALVE
6130-00-105-9996INTERCHANGEABLE
CHARGER,BATTERY
5310-00-163-1920INTERCHANGEABLE
NUT,SELF-LOCKING,PLATE
5340-00-198-6812INTERCHANGEABLE
CLAMP,LOOP
E1127-2-10
4140-00-224-9149INTERCHANGEABLE
IMPELLER,FAN,AXIAL
26596
5305-00-282-7651INTERCHANGEABLE
SETSCREW
2805-00-353-7602INTERCHANGEABLE
CRANKSHAFT
26596
5935-00-767-1875INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
31-2677-1
5935-00-998-4254INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
978039-1
6625-01-090-5751INTERCHANGEABLE
AMMETER
26596
5340-01-458-0688INTERCHANGEABLE
PLUNGER,QUICK RELEASE
26771

Frequently Asked Questions

What is NSN 5331-00-807-4053?

NSN 5331-00-807-4053 is a O-Ring, manufactured by Triumph Thermal Systems - Maryland, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-807-4053?

NSN 5331-00-807-4053 has 5 cross-referenced part numbers: 50388-5 (Strohmeyer, Julie a. Dba Julie a. Strohmeyer), 50388-3 (Triumph Thermal Systems - Maryland, Inc.), 26771 (Triumph Thermal Systems - Maryland, Inc.), 50388-5 (Triumph Thermal Systems - Maryland, Inc.), 26596 (Triumph Thermal Systems - Maryland, Inc.).

What NSN replaces 5331-00-807-4053?

There are 11 known substitutes for 5331-00-807-4053: 3655-00-029-0216, 6130-00-105-9996, 5310-00-163-1920 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50388-3?

Key specifications for 50388-3: Material: RUBBER SYNTHETIC; Cross-Sectional Height: 0.062 INCHES NOMINAL IN. 2 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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