The Ring,piston, cataloged under National Stock Number 4310-01-313-8692, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4310-01-313-8692 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Status | ACTIVE |
| Material | IRON OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| NK1774-1 | 5/9 Secondary reference Dresser-Rand Company |
| NP-782 | 5/9 Secondary reference Dresser-Rand Company |
| NK1774 | 3/9 Design control — primary reference Dresser-Rand Company |
| NP-782 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| NP-782 PART 40 | 5/9 Secondary reference U.S. Government activity |
| NK1774-1 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| NK1774 | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| NK1774 | 5/9 Secondary reference U.S. Government activity |
NSN 4310-01-313-8692 is a Ring,piston, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-313-9476. Verify interchangeability with system specifications before substitution.
Key specifications for 4310-01-313-8692: End Item Identification: GIMPEL MACHINE WORKS INC,NP-792 GUARDIAN VALVE; Material: IRON OVERALL. 1 specification is 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.