PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12129Ring Assy,matched

Pacific Piston Ring Co Inc · NSN 2995-01-029-0250 · FSC 2995 · No Item Name Available
Verified by PartsTable
NSN 2995-01-029-0250 — this item is cataloged by the U.S. Government under National Stock Number 2995-01-029-0250. Primary manufacturer part number: 12129.
Features
  • Ring Assy,matched — FSC 2995
  • 3 verified cross-references
  • Primary manufacturer: Pacific Piston Ring Co Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ring Assy,matched, cataloged under National Stock Number 2995-01-029-0250, is classified within Federal Supply Class 2995 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Pacific Piston Ring Co Inc. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRing Assy,matched
FSC / FSG2995 — No Item Name Available (FSG 29)
ManufacturersItt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (CAGE 73760); Northrop Grumman Systems Corporation (CAGE 26512); Pacific Piston Ring Co Inc (CAGE 82151)
Technical Specifications
ParameterValue
NSN2995-01-029-0250
Primary Part Number12129
Item NameRing Assy,matched
FSC / FSG2995 / 29 — No Item Name Available
ManufacturerPacific Piston Ring Co Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-144-8498059-9 INTERCHANGEABLE
Bearing,ball,annular
Lockheed Martin Corporation Div Rms - Mitchel Field
5133-00-227-9671 INTERCHANGEABLE
Drill,twist
6730-00-356-5912 INTERCHANGEABLE
Plunger,reel Arm
3010-00-796-1863 INTERCHANGEABLE
Bellows,pressure
5310-00-808-212712129 INTERCHANGEABLE
Washer,shouldered
Curtiss-Wright Controls Integrated Sensing, Inc.
3010-00-899-096812129 INTERCHANGEABLE
Bellows,pressure
Senior Operations Llc Dba Metal Bellows Div Metal Bellows
5920-01-053-0986 INTERCHANGEABLE
Fuse,cartridge
5935-01-062-3399121-29 INTERCHANGEABLE
Connector,receptacle,electrical
Tabet Manufacturing Company, Inc. Dba Tabet Manufacturing Co Inc
5970-01-103-6930 INTERCHANGEABLE
Insulator
2920-01-169-8706 INTERCHANGEABLE
Parts Kit,connector
Cross-Reference Index
Part NumberManufacturer
125302C Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S (USA)
125302C Northrop Grumman Systems Corporation (USA)
12129 PRIMARY Pacific Piston Ring Co Inc (USA)
Related Parts
3110-00-144-8498INTERCHANGEABLE
BEARING,BALL,ANNULAR
059-9
5133-00-227-9671INTERCHANGEABLE
DRILL,TWIST
6730-00-356-5912INTERCHANGEABLE
PLUNGER,REEL ARM
3010-00-796-1863INTERCHANGEABLE
BELLOWS,PRESSURE
5310-00-808-2127INTERCHANGEABLE
WASHER,SHOULDERED
12129
3010-00-899-0968INTERCHANGEABLE
BELLOWS,PRESSURE
12129
5920-01-053-0986INTERCHANGEABLE
FUSE,CARTRIDGE
5935-01-062-3399INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
121-29
5970-01-103-6930INTERCHANGEABLE
INSULATOR
2920-01-169-8706INTERCHANGEABLE
PARTS KIT,CONNECTOR
5930-01-171-7414INTERCHANGEABLE
SWITCH,PUSH
4820-01-226-1700INTERCHANGEABLE
PARTS KIT,PRESSURE REGULATING VA
12129

Frequently Asked Questions

What is NSN 2995-01-029-0250?

NSN 2995-01-029-0250 is a Ring Assy,matched, manufactured by Pacific Piston Ring Co Inc, classified under FSC 2995 (No Item Name Available). Status: active.

What are the part numbers for NSN 2995-01-029-0250?

NSN 2995-01-029-0250 has 3 cross-referenced part numbers: 125302C (Itt Aerospace Controls Llc Dba Itt Aerospace Controls Unit S), 125302C (Northrop Grumman Systems Corporation), 12129 (Pacific Piston Ring Co Inc).

What NSN replaces 2995-01-029-0250?

There are 12 known substitutes for 2995-01-029-0250: 3110-00-144-8498, 5133-00-227-9671, 6730-00-356-5912 and 9 more. Verify interchangeability with system specifications before substitution.

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