PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0000-10O-Ring

Watts Automatic Control Valve Inc · NSN 5331-01-126-0877 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-126-0877 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-126-0877. Primary manufacturer part number: 0000-10.
Features
  • O-Ring — FSC 5331
  • 3 verified cross-references
  • Primary manufacturer: Watts Automatic Control Valve Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-126-0877, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Watts Automatic Control Valve Inc. This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersWatts Automatic Control Valve Inc (CAGE 0LX27); Muesco Inc Dba Muesco Mallay Inc (CAGE 59273)
Technical Specifications
ParameterValue
NSN5331-01-126-0877
Primary Part Number0000-10
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerWatts Automatic Control Valve Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5910-00-113-5499 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
5910-01-128-048310-00010-00 INTERCHANGEABLE
Capacitor
Compaq Federal Llc
5905-01-177-2000 INTERCHANGEABLE
Resistor,fixed,film
5996-01-183-764600-00-10 INTERCHANGEABLE
Amplifier,radio Frequency
Tel-Instrument Electronics Corp Div Tel-Instrument Electronics Corporation
6515-01-246-8241000010 INTERCHANGEABLE
Connector,tracheal Tube
Reo Industries Ltd
4320-01-370-80031000.010 INTERCHANGEABLE
Deflector,dirt and Liquid
Multi-Duti Manufacturing, Inc.
5935-01-420-7666C12170-1 INTERCHANGEABLE
Insert,electrical Connector
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
6630-01-476-479200-0010 INTERCHANGEABLE
Analyzer,hematology
Defense Medical Standardization Board
7610-01-525-3734100-0010 INTERCHANGEABLE
Manual,technical
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
Cross-Reference Index
Part NumberManufacturer
0000-10 PRIMARY Watts Automatic Control Valve Inc (USA)
10000-10 Watts Automatic Control Valve Inc (USA)
10000-10 Muesco Inc Dba Muesco Mallay Inc (USA)
Related Parts
5910-00-113-5499INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
5910-01-128-0483INTERCHANGEABLE
CAPACITOR
10-00010-00
5905-01-177-2000INTERCHANGEABLE
RESISTOR,FIXED,FILM
5996-01-183-7646INTERCHANGEABLE
AMPLIFIER,RADIO FREQUENCY
00-00-10
6515-01-246-8241INTERCHANGEABLE
CONNECTOR,TRACHEAL TUBE
000010
4320-01-370-8003INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
1000.010
5935-01-420-7666INTERCHANGEABLE
INSERT,ELECTRICAL CONNECTOR
C12170-1
6630-01-476-4792INTERCHANGEABLE
ANALYZER,HEMATOLOGY
00-0010
7610-01-525-3734INTERCHANGEABLE
MANUAL,TECHNICAL
100-0010

Frequently Asked Questions

What is NSN 5331-01-126-0877?

NSN 5331-01-126-0877 is a O-Ring, manufactured by Watts Automatic Control Valve Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-126-0877?

NSN 5331-01-126-0877 has 3 cross-referenced part numbers: 0000-10 (Watts Automatic Control Valve Inc), 10000-10 (Watts Automatic Control Valve Inc), 10000-10 (Muesco Inc Dba Muesco Mallay Inc).

What NSN replaces 5331-01-126-0877?

There are 9 known substitutes for 5331-01-126-0877: 5910-00-113-5499, 5910-01-128-0483, 5905-01-177-2000 and 6 more. Verify interchangeability with system specifications before substitution.

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