The Ring Set,piston, cataloged under National Stock Number 3040-01-045-8746, is classified within Federal Supply Class 3040 (Miscellaneous Power Transmission Equipment) of the Mechanical Power Transmission Equipment 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3040-01-045-8746 |
| Primary Part Number | S30071-347 |
| Item Name | Ring Set,piston |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Ring Set Component Parts | PISTON RING 97802 2; EXPANDER 97820 1 |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 4.116 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 |
|---|---|
| S30071-347 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S30071-347 | 5/9 Secondary reference U.S. Government activity |
| S30071-347-99PH | C/1 Advisory reference — outside the item-of-supply concept Trelleborg Sealing Solutions Us, Inc. |
NSN 3040-01-045-8746 is a Ring Set,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-045-8746 has 1 manufacturer part number on file: S30071-347 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S30071-347: Ring Set Component Parts: PISTON RING 97802 2; EXPANDER 97820 1; Piston Accommodation Quantity: 1; Standard Bore Diameter: 4.116 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.