PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

39691Ring Set,piston

Leroi International Inc Dba Compair Leroi · NSN 4310-00-862-7749 · FSC 4310 · No Item Name Available
Verified by PartsTable
NSN 4310-00-862-7749 — this item is cataloged by the U.S. Government under National Stock Number 4310-00-862-7749. Primary manufacturer part number: 39691.
Features
  • Ring Set,piston — FSC 4310
  • Piston Accommodation Quantity: 1
  • Ring Set Component Parts: 4310-00-355-3984,SCRAPE RING,1,4920-00-168-1696,COMPRESSION RING,1
  • Standard Bore Diameter: 2.250 INCHES IN
  • 2 verified cross-references
  • Primary manufacturer: Leroi International Inc Dba Compair Leroi
Applications
  • Hydraulic and pneumatic systems
  • Industrial process pumping
  • Military vehicle hydraulics
General Description

The Ring Set,piston, cataloged under National Stock Number 4310-00-862-7749, 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 3 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4310-00-862-7749
Primary Part Number39691
Item NameRing Set,piston
FSC / FSG4310 / 43 — No Item Name Available
ManufacturerLeroi International Inc Dba Compair Leroi
StatusACTIVE
Piston Accommodation Quantity1
Ring Set Component Parts4310-00-355-3984,SCRAPE RING,1,4920-00-168-1696,COMPRESSION RING,1
Standard Bore Diameter2.250 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
9905-01-136-485439691 INTERCHANGEABLE
Plate,identification
Eaton Aerospace Llc Dba Eaton Aerospace Jackson
2530-01-214-32533969-1 INTERCHANGEABLE
Tie Rod End,steering
Pdi Ground Support Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
39691 PRIMARY Leroi International Inc Dba Compair Leroi (USA)
39691 Compair Kellogg Div of Robertshaw Controls Co (USA)
Related Parts
9905-01-136-4854INTERCHANGEABLE
PLATE,IDENTIFICATION
39691
2530-01-214-3253INTERCHANGEABLE
TIE ROD END,STEERING
3969-1

Frequently Asked Questions

What is NSN 4310-00-862-7749?

NSN 4310-00-862-7749 is a Ring Set,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 4310-00-862-7749?

NSN 4310-00-862-7749 has 2 cross-referenced part numbers: 39691 (Leroi International Inc Dba Compair Leroi), 39691 (Compair Kellogg Div of Robertshaw Controls Co).

What NSN replaces 4310-00-862-7749?

There are 2 known substitutes for 4310-00-862-7749: 9905-01-136-4854, 2530-01-214-3253. Verify interchangeability with system specifications before substitution.

What are the specifications of 39691?

Key specifications for 39691: Piston Accommodation Quantity: 1; Ring Set Component Parts: 4310-00-355-3984,SCRAPE RING,1,4920-00-168-1696,COMPRESSION RING,1; Standard Bore Diameter: 2.250 INCHES 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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