PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7125ARing,piston

O. C. Keckley Company · NSN 4310-00-376-7746 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-376-7746 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-376-7746. Primary manufacturer part number: 7125A.
Features
  • Ring,piston — FSC 4310
  • Material: IRON OVERALL
  • Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE
  • FSC Application Data: VALVE,REDUCING,NONPOWERED
  • Ring Style: CONCENTRIC
  • Standard Bore Diameter: 2.000 INCHES IN
  • Joint Style: VERTICAL JOINT
  • Radial Wall Thickness: 0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
Applications
  • Applications requiring Iron Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-00-376-7746, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is O. C. Keckley Company. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-376-7746
Primary Part Number7125A
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerO. C. Keckley Company
StatusACTIVE
MaterialIRON OVERALL
Cross-Sectional Shape StylePLAIN RECTANGULAR, STRAIGHT FACE
FSC Application DataVALVE,REDUCING,NONPOWERED
Ring StyleCONCENTRIC
Standard Bore Diameter2.000 INCHES IN
Joint StyleVERTICAL JOINT
Radial Wall Thickness0.0550 INCHES MINIMUM AND 0.0650 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2815-00-146-2183 INTERCHANGEABLE
Housing
5975-00-242-6429 INTERCHANGEABLE
Chase Nipple,conduit
5120-00-264-3796 INTERCHANGEABLE
Wrench,adjustable
5975-00-280-3105 INTERCHANGEABLE
Step,pole
6145-00-635-5011158 INTERCHANGEABLE
Cable,special Purpose,electrical
Birnbach Co Inc
5355-00-735-2169 INTERCHANGEABLE
Cable,dial
5995-00-869-43227125 INTERCHANGEABLE
Cable Assembly,power,electrical
Spencer Industries Inc
3414-00-873-8033 INTERCHANGEABLE
Shaper,gear
4220-00-912-6668WB300 INTERCHANGEABLE
Rubber Weight Belt
Xs Scuba, Inc Dba Sea Pearls
5330-00-930-62907125 INTERCHANGEABLE
Gasket
Essex Industries, Inc. Dba Essex Industries
Cross-Reference Index
Part NumberManufacturer
20628CPC7125 O. C. Keckley Company (USA)
7125 O. C. Keckley Company (USA)
7125A PRIMARY O. C. Keckley Company (USA)
Related Parts
2815-00-146-2183INTERCHANGEABLE
HOUSING
5975-00-242-6429INTERCHANGEABLE
CHASE NIPPLE,CONDUIT
5120-00-264-3796INTERCHANGEABLE
WRENCH,ADJUSTABLE
5975-00-280-3105INTERCHANGEABLE
STEP,POLE
6145-00-635-5011INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
158
5355-00-735-2169INTERCHANGEABLE
CABLE,DIAL
5995-00-869-4322INTERCHANGEABLE
CABLE ASSEMBLY,POWER,ELECTRICAL
7125
3414-00-873-8033INTERCHANGEABLE
SHAPER,GEAR
4220-00-912-6668INTERCHANGEABLE
RUBBER WEIGHT BELT
WB300
5330-00-930-6290INTERCHANGEABLE
GASKET
7125
6685-01-007-8087INTERCHANGEABLE
TRANSMITTER,TEMPERATURE,ELECTRIC
4730-01-018-6083INTERCHANGEABLE
CAP,PIPE
7125

Frequently Asked Questions

What is NSN 4310-00-376-7746?

NSN 4310-00-376-7746 is a Ring,piston, manufactured by O. C. Keckley Company, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-00-376-7746?

NSN 4310-00-376-7746 has 3 cross-referenced part numbers: 20628CPC7125 (O. C. Keckley Company), 7125 (O. C. Keckley Company), 7125A (O. C. Keckley Company).

What NSN replaces 4310-00-376-7746?

There are 12 known substitutes for 4310-00-376-7746: 2815-00-146-2183, 5975-00-242-6429, 5120-00-264-3796 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7125A?

Key specifications for 7125A: Material: IRON OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; FSC Application Data: VALVE,REDUCING,NONPOWERED; Ring Style: CONCENTRIC. 8 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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