The Ring,piston, cataloged under National Stock Number 4310-01-357-7105, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Lexair Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-01-357-7105 |
| Primary Part Number | P90009 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Lexair Inc |
| Status | ACTIVE |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | VERTICAL JOINT |
| Ring Style | CONCENTRIC |
| 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 |
|---|---|
| P90009 PRIMARY | Lexair Inc (USA) |
| Reference | Meaning |
|---|---|
| P90073 | D/9 Drawing number reference only Lexair Inc |
NSN 4310-01-357-7105 is a Ring,piston, manufactured by Lexair Inc, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-357-7105 has 1 manufacturer part number on file: P90009 (Lexair Inc).
3 possible matches (shared part number, not a government interchangeability claim): 4310-01-357-7106, 4310-01-357-7107, 5331-01-435-4894. Verify interchangeability with system specifications before substitution.
Key specifications for P90009: Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE; Joint Style: VERTICAL JOINT; Ring Style: CONCENTRIC; Special Features: LOW PRESSURE COMPRESSOR RING. 3 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.