The Ring Set,piston, cataloged under National Stock Number 2805-01-172-5195, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Trelleborg Sealing Solutions Us, Inc.. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2805-01-172-5195 |
| Primary Part Number | S32279-17 |
| Item Name | Ring Set,piston |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| Bore Diameter Oversize | 0.001 INCHES IN |
| Ring Set Component Parts | PIN,ANTI ROTATION,289334-7,82106,1; RING,EXPANDER,289334-5,82106,1; PISTON RING,289334-3,82106,2 |
| Piston Accommodation Quantity | 1 |
| Standard Bore Diameter | 2.032 INCHES IN |
| 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 |
|---|---|
| S32279-17 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S32279-17 | 5/9 Secondary reference U.S. Government activity |
| 289334-1 | 1/2 Source control — Government-approved source U.S. Government activity |
NSN 2805-01-172-5195 is a Ring Set,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-01-172-5195 has 1 manufacturer part number on file: S32279-17 (Trelleborg Sealing Solutions Us, Inc.).
Key specifications for S32279-17: Bore Diameter Oversize: 0.001 INCHES IN; Ring Set Component Parts: PIN,ANTI ROTATION,289334-7,82106,1; RING,EXPANDER,289334-5,82106,1; PISTON RING,289334-3,82106,2; Piston Accommodation Quantity: 1; Special Features: PISTON RING MOLY REINF.W.S.S.SPECZZ-53;ANTI ROTATION PIN AND EXPANDER PASSIVATE PER MIL-S-5002;ANTI ROTATIONPIN HEAT TREATMENT ANNEALED;EXPANDER RING HEAT TREATMENT CONDC. 4 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 2805-01-172-5195 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.