The Ring Set,piston, cataloged under National Stock Number 4310-00-526-4902, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Trelleborg Sealing Solutions Us, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4310-00-526-4902 |
| Primary Part Number | S12257-3007 |
| Item Name | Ring Set,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| FSC Application Data | ACFT HYDRAULIC SYSTEM |
| Ring Set Component Parts | EXPANDER 1, PISTON RING 2 |
| Piston Accommodation Quantity | 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S12257-3007 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 131-60234 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 4310-00-526-4902 is a Ring Set,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-526-4902 has 1 manufacturer part number on file: S12257-3007 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S12257-3007: FSC Application Data: ACFT HYDRAULIC SYSTEM; Ring Set Component Parts: EXPANDER 1, PISTON RING 2; Piston Accommodation Quantity: 1; Special Features: CRES.STEEL; STEP JOINT; RADIAL WALL 0.286IN.W; INSIDE GROOVE OIL PASSAGE 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.
NSN 4310-00-526-4902 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.