The Ring Set,piston, cataloged under National Stock Number 3040-01-361-6385, 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.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Ring Set,piston |
| FSC / FSG | 3040 — Miscellaneous Power Transmission Equipment (FSG 30) |
| Manufacturers | Trelleborg Sealing Solutions Us, Inc. (CAGE 09257) |
| Parameter | Value |
|---|---|
| NSN | 3040-01-361-6385 |
| Primary Part Number | A78093-337PH-99 |
| Item Name | Ring Set,piston |
| FSC / FSG | 3040 / 30 — Miscellaneous Power Transmission Equipment |
| Manufacturer | Trelleborg Sealing Solutions Us, Inc. |
| Status | ACTIVE |
| 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 |
|---|---|
| A78093-337PH-99 PRIMARY | Trelleborg Sealing Solutions Us, Inc. (USA) |
| Reference | Meaning |
|---|---|
| S32152-337-99 PH | 5/9 Secondary reference Trelleborg Sealing Solutions Us, Inc. |
| S32152-337-99 PH | 3/9 Design control — primary reference U.S. Government activity |
| S32152 | D/9 Drawing number reference only U.S. Government activity |
| A78093 | 1/2 Source control — Government-approved source U.S. Government activity |
| A78093-337PH-99 | 5/2 Secondary reference U.S. Government activity |
NSN 3040-01-361-6385 is a Ring Set,piston, manufactured by Trelleborg Sealing Solutions Us, Inc., classified under FSC 3040, Miscellaneous Power Transmission Equipment. Status: active.
NSN 3040-01-361-6385 has 1 manufacturer part number on file: A78093-337PH-99 (Trelleborg Sealing Solutions Us, Inc.).
4 possible matches (shared part number, not a government interchangeability claim): 3040-01-361-6386, 3040-01-362-3485, 3040-01-362-3486. Verify interchangeability with system specifications before substitution.
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 3040-01-361-6385 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.