The Ring Set,piston, cataloged under National Stock Number 4310-00-449-0505, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Gardner Denver 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4310-00-449-0505 |
| Primary Part Number | ZR30 |
| Item Name | Ring Set,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Gardner Denver Inc. |
| Status | ACTIVE |
| Ring Set Component Parts | COMPRESSION RING,R15-10A,11568,2,COMPRESSION RING,R15-10B,11568,4,COMPRESSION RING,R10-10A,11568,2,COMPRESSION RING,R10-10B,11568,RE36-10D,11568,2 A |
| Piston Accommodation Quantity | 4 |
| Standard Bore Diameter | 2.500 INCHES AND 4.625 INCHES IN |
| 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 |
|---|---|
| ZR30 PRIMARY | Gardner Denver Inc. (USA) |
| Reference | Meaning |
|---|---|
| P3030A | 5/9 Secondary reference Gardner Denver Inc. |
NSN 4310-00-449-0505 is a Ring Set,piston, manufactured by Gardner Denver Inc., classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-449-0505 has 1 manufacturer part number on file: ZR30 (Gardner Denver Inc.).
1 possible match (shared part number, not a government interchangeability claim): 6130-00-942-5498. Verify interchangeability with system specifications before substitution.
Key specifications for ZR30: Ring Set Component Parts: COMPRESSION RING,R15-10A,11568,2,COMPRESSION RING,R15-10B,11568,4,COMPRESSION RING,R10-10A,11568,2,COMPRESSION RING,R10-10B,11568,RE36-10D,11568,2 A; Piston Accommodation Quantity: 4; Standard Bore Diameter: 2.500 INCHES AND 4.625 INCHES IN. 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.