The Ring,piston, cataloged under National Stock Number 4310-01-085-2048, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Leroi International Inc Dba Compair Leroi. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-085-2048 |
| Primary Part Number | 48205 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Leroi International Inc Dba Compair Leroi |
| Status | ACTIVE |
| Material Document and Classification | 48205 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL/DIAGONAL JOINT |
| Radial Wall Thickness | 0.0690 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Standard Bore Diameter | 1.500 INCHES IN |
| Material | STEEL OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 48205 PRIMARY | Leroi International Inc Dba Compair Leroi (USA) |
| Reference | Meaning |
|---|---|
| 48205 | 3/9 Design control — primary reference Compair Kellogg Div of Robertshaw Controls Co |
NSN 4310-01-085-2048 is a Ring,piston, manufactured by Leroi International Inc Dba Compair Leroi, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-085-2048 has 1 manufacturer part number on file: 48205 (Leroi International Inc Dba Compair Leroi).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-692-8938. Verify interchangeability with system specifications before substitution.
Key specifications for 48205: Overall Width: 1.4310 INCHES NOMINAL IN; Material Document and Classification: 48205 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL/DIAGONAL JOINT. 7 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.