PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49525Ring,piston

Leroi International Inc Dba Compair Leroi · NSN 4310-01-037-9252 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-01-037-9252 — this item is cataloged by the U.S. Government under National Stock Number 4310-01-037-9252. Primary manufacturer part number: 49525.
Features
  • Ring,piston — FSC 4310
  • Radial Wall Thickness: 0.2340 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Standard Bore Diameter: 5.250 INCHES IN
  • Ring Style: CONCENTRIC
  • Cross-Sectional Shape Style: STRAIGHT FACE, TOP RELIEF
  • Joint Style: VERTICAL JOINT
  • 2 verified cross-references
Applications
  • Applications requiring Steel Overall construction
General Description

The Ring,piston, cataloged under National Stock Number 4310-01-037-9252, is classified within Federal Supply Class 4310 (No Item Name Available) of the Pumps and Compressors group. The primary manufacturer of record is Leroi International Inc Dba Compair Leroi. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-01-037-9252
Primary Part Number49525
Item NameRing,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerLeroi International Inc Dba Compair Leroi
StatusACTIVE
Radial Wall Thickness0.2340 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Standard Bore Diameter5.250 INCHES IN
Ring StyleCONCENTRIC
Cross-Sectional Shape StyleSTRAIGHT FACE, TOP RELIEF
Joint StyleVERTICAL JOINT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6650-00-232-790149525 INTERCHANGEABLE
Prism,optical Instrument,mounted
Brunson Instrument Company Dba Brunson Instrument Company
3110-00-540-4659307SGQ6A7 INTERCHANGEABLE
Bearing,ball,annular
Skf Usa Inc.
5330-00-860-785149525 INTERCHANGEABLE
Packing Assembly
Liquid Controls, L.l.c. Div Idex Corporation
Cross-Reference Index
Part NumberManufacturer
49525 Compair Kellogg Div of Robertshaw Controls Co (USA)
49525 PRIMARY Leroi International Inc Dba Compair Leroi (USA)
Related Parts
6650-00-232-7901INTERCHANGEABLE
PRISM,OPTICAL INSTRUMENT,MOUNTED
49525
3110-00-540-4659INTERCHANGEABLE
BEARING,BALL,ANNULAR
307SGQ6A7
5330-00-860-7851INTERCHANGEABLE
PACKING ASSEMBLY
49525

Frequently Asked Questions

What is NSN 4310-01-037-9252?

NSN 4310-01-037-9252 is a Ring,piston, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 4310 (No Item Name Available). Status: active.

What are the part numbers for NSN 4310-01-037-9252?

NSN 4310-01-037-9252 has 2 cross-referenced part numbers: 49525 (Compair Kellogg Div of Robertshaw Controls Co), 49525 (Leroi International Inc Dba Compair Leroi).

What NSN replaces 4310-01-037-9252?

There are 3 known substitutes for 4310-01-037-9252: 6650-00-232-7901, 3110-00-540-4659, 5330-00-860-7851. Verify interchangeability with system specifications before substitution.

What are the specifications of 49525?

Key specifications for 49525: Radial Wall Thickness: 0.2340 INCHES NOMINAL IN; Material: STEEL OVERALL; Standard Bore Diameter: 5.250 INCHES IN; Ring Style: CONCENTRIC. 7 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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