PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

13550O-Ring

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 5331-00-937-8477 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-00-937-8477 — this item is cataloged by the U.S. Government under National Stock Number 5331-00-937-8477. Primary manufacturer part number: 13550.
Features
  • O-Ring — FSC 5331
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Center Hole Diameter: 0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-00-937-8477, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 3 verified specifications, 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-00-937-8477
Primary Part Number13550
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Center Hole Diameter0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5950-00-133-157213550 INTERCHANGEABLE
Reactor
Magnetika Inc
3455-00-541-619713550 INTERCHANGEABLE
Cutter,milling,convex
Niagara Cutter Inc
1660-00-605-3470 INTERCHANGEABLE
Valve,pressure,anti-G Suit
5970-00-665-04869550 INTERCHANGEABLE
Insulator,feedthru
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
6680-00-679-10239585-027 INTERCHANGEABLE
Meter,volumetric Positive Displa
Badger Meter Inc
5935-00-815-515413550 INTERCHANGEABLE
Connector,receptacle,electrical
Amphenol Corporation Div Amphenol Rf
5935-00-970-8862 INTERCHANGEABLE
Connector Body,receptacle,electr
6680-01-194-628613550 INTERCHANGEABLE
Meter,flow Rate Indicating
Malabar
5310-01-345-2294A13550 INTERCHANGEABLE
Nut,plain,hexagon
Leslie Controls, Inc. Dba Leslie Controls Inc
4140-01-564-893013550 INTERCHANGEABLE
Fan,centrifugal
Fibrebond Corp
Cross-Reference Index
Part NumberManufacturer
13550 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
Related Parts
5950-00-133-1572INTERCHANGEABLE
REACTOR
13550
3455-00-541-6197INTERCHANGEABLE
CUTTER,MILLING,CONVEX
13550
1660-00-605-3470INTERCHANGEABLE
VALVE,PRESSURE,ANTI-G SUIT
5970-00-665-0486INTERCHANGEABLE
INSULATOR,FEEDTHRU
9550
6680-00-679-1023INTERCHANGEABLE
METER,VOLUMETRIC POSITIVE DISPLA
9585-027
5935-00-815-5154INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
13550
5935-00-970-8862INTERCHANGEABLE
CONNECTOR BODY,RECEPTACLE,ELECTR
6680-01-194-6286INTERCHANGEABLE
METER,FLOW RATE INDICATING
13550
5310-01-345-2294INTERCHANGEABLE
NUT,PLAIN,HEXAGON
A13550
4140-01-564-8930INTERCHANGEABLE
FAN,CENTRIFUGAL
13550

Frequently Asked Questions

What is NSN 5331-00-937-8477?

NSN 5331-00-937-8477 is a O-Ring, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-00-937-8477?

NSN 5331-00-937-8477 has 1 cross-referenced part number: 13550 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems).

What NSN replaces 5331-00-937-8477?

There are 10 known substitutes for 5331-00-937-8477: 5950-00-133-1572, 3455-00-541-6197, 1660-00-605-3470 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 13550?

Key specifications for 13550: Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Center Hole Diameter: 0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN. 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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