PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

100186O-Ring

Neptune Chemical Pump Co Div of R a Industries Inc · NSN 5331-01-276-6657 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-276-6657 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-276-6657. Primary manufacturer part number: 100186.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Neptune Chemical Pump Co Div of R a Industries Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-276-6657, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Neptune Chemical Pump Co Div of R a Industries Inc. This item has 2 commercial cross-references 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.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersNeptune Chemical Pump Co Div of R a Industries Inc (CAGE 28625)
Technical Specifications
ParameterValue
NSN5331-01-276-6657
Primary Part Number100186
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerNeptune Chemical Pump Co Div of R a Industries Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
2530-00-164-3316100186 INTERCHANGEABLE
Cup,brake Assembly
Dana Off Highway Products, Llc
5365-00-262-92693233-9169-5 INTERCHANGEABLE
Ring,mounting,valve,elevation Dr
Kidde Fire Fighting, Inc. Div National Foam
5330-00-291-0607X1014T82 INTERCHANGEABLE
Gasket
Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions
4920-00-732-5733100186 INTERCHANGEABLE
Frequency Discrimin
Mission Systems Davenport Inc.
6625-01-038-6833 INTERCHANGEABLE
Ammeter
6530-01-334-88111001-86 INTERCHANGEABLE
Protector,surgical Instrument Ti
Scanlan Intl
5950-01-445-6898A3252049-17 INTERCHANGEABLE
Coil,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3120-01-508-7379100186 INTERCHANGEABLE
Bushing,sleeve
Marine Travelift Inc
6150-01-510-7705482-7069227-85 INTERCHANGEABLE
Power Strip,electrical Outlet
Naval Sea Systems Command
1005-01-703-3528100-186 INTERCHANGEABLE
Mount,sight,small Arms
Reptilia Llc
Cross-Reference Index
Part NumberManufacturer
516 Neptune Chemical Pump Co Div of R a Industries Inc (USA)
100186 PRIMARY Neptune Chemical Pump Co Div of R a Industries Inc (USA)
Related Parts
2530-00-164-3316INTERCHANGEABLE
CUP,BRAKE ASSEMBLY
100186
5365-00-262-9269INTERCHANGEABLE
RING,MOUNTING,VALVE,ELEVATION DR
3233-9169-5
5330-00-291-0607INTERCHANGEABLE
GASKET
X1014T82
4920-00-732-5733INTERCHANGEABLE
FREQUENCY DISCRIMIN
100186
6625-01-038-6833INTERCHANGEABLE
AMMETER
6530-01-334-8811INTERCHANGEABLE
PROTECTOR,SURGICAL INSTRUMENT TI
1001-86
5950-01-445-6898INTERCHANGEABLE
COIL,RADIO FREQUENCY
A3252049-17
3120-01-508-7379INTERCHANGEABLE
BUSHING,SLEEVE
100186
6150-01-510-7705INTERCHANGEABLE
POWER STRIP,ELECTRICAL OUTLET
482-7069227-85
1005-01-703-3528INTERCHANGEABLE
MOUNT,SIGHT,SMALL ARMS
100-186

Frequently Asked Questions

What is NSN 5331-01-276-6657?

NSN 5331-01-276-6657 is a O-Ring, manufactured by Neptune Chemical Pump Co Div of R a Industries Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-276-6657?

NSN 5331-01-276-6657 has 2 cross-referenced part numbers: 516 (Neptune Chemical Pump Co Div of R a Industries Inc), 100186 (Neptune Chemical Pump Co Div of R a Industries Inc).

What NSN replaces 5331-01-276-6657?

There are 10 known substitutes for 5331-01-276-6657: 2530-00-164-3316, 5365-00-262-9269, 5330-00-291-0607 and 7 more. Verify interchangeability with system specifications before substitution.

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