PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B3112781T9O-Ring

Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. · NSN 5331-01-029-0660 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-029-0660 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-029-0660. Primary manufacturer part number: B3112781T9.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 3.150 INCHES MINIMUM AND 3.180 INCHES MAXIMUM IN
  • Material: RUBBER SYNTHETIC
  • Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
  • 4 verified cross-references
  • Primary manufacturer: Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, 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 5331-01-029-0660, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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
NSN5331-01-029-0660
Primary Part NumberB3112781T9
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerMeggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
StatusACTIVE
Center Hole Diameter3.150 INCHES MINIMUM AND 3.180 INCHES MAXIMUM IN
MaterialRUBBER SYNTHETIC
Cross-Sectional Height0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
3110-00-155-8874102-5630P1 INTERCHANGEABLE
Bearing,ball,annular
Raytheon Company Dba Raytheon
6105-00-478-0051 INTERCHANGEABLE
Motor,alternating Current
1660-00-707-916019046 INTERCHANGEABLE
Parts Kit,regulator
Mission Systems Orchard Park Inc
5305-00-889-30002251-207 INTERCHANGEABLE
Screw,machine
Reliance Comm/tec Corp Lorain Products Div
5998-01-215-72571904-6 INTERCHANGEABLE
Extender Card,electronic Test
Gifft T H Co Inc
6550-01-240-452219-046 INTERCHANGEABLE
Bacteria Culture Control Discs
Remel Inc.
4440-01-287-9011995260 INTERCHANGEABLE
Dryer,shell Assembly
D & D Instruments Inc
2990-01-707-5598A81-20929 INTERCHANGEABLE
Oil Pump Assembly,engine
Rix Industries
4720-01-711-1994A73-18789-13 INTERCHANGEABLE
Hose Assembly,nonmetallic
Rix Industries
4720-01-711-2000A73-18789-19 INTERCHANGEABLE
Hose Assembly,nonmetallic
Rix Industries
Cross-Reference Index
Part NumberManufacturer
B3112781T9 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
19046 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
B3112781T9 Howden Fluid Systems (USA)
19046 Howden Fluid Systems (USA)
Related Parts
3110-00-155-8874INTERCHANGEABLE
BEARING,BALL,ANNULAR
102-5630P1
6105-00-478-0051INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
1660-00-707-9160INTERCHANGEABLE
PARTS KIT,REGULATOR
19046
5305-00-889-3000INTERCHANGEABLE
SCREW,MACHINE
2251-207
5998-01-215-7257INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
1904-6
6550-01-240-4522INTERCHANGEABLE
BACTERIA CULTURE CONTROL DISCS
19-046
4440-01-287-9011INTERCHANGEABLE
DRYER,SHELL ASSEMBLY
995260
2990-01-707-5598INTERCHANGEABLE
OIL PUMP ASSEMBLY,ENGINE
A81-20929
4720-01-711-1994INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
A73-18789-13
4720-01-711-2000INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
A73-18789-19
4710-01-711-7686INTERCHANGEABLE
PIPE ASSEMBLY,METAL
A455-18976

Frequently Asked Questions

What is NSN 5331-01-029-0660?

NSN 5331-01-029-0660 is a O-Ring, manufactured by Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-029-0660?

NSN 5331-01-029-0660 has 4 cross-referenced part numbers: B3112781T9 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), 19046 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), B3112781T9 (Howden Fluid Systems), 19046 (Howden Fluid Systems).

What NSN replaces 5331-01-029-0660?

There are 11 known substitutes for 5331-01-029-0660: 3110-00-155-8874, 6105-00-478-0051, 1660-00-707-9160 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B3112781T9?

Key specifications for B3112781T9: Center Hole Diameter: 3.150 INCHES MINIMUM AND 3.180 INCHES MAXIMUM IN; Material: RUBBER SYNTHETIC; Cross-Sectional Height: 0.067 INCHES MINIMUM AND 0.073 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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