The Pneumatic Muffler,exhaust-Intake, cataloged under National Stock Number 4330-01-373-9356, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Sound Seal, Inc. Dba Sound Seal, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4330-01-373-9356 |
| Primary Part Number | RM01 |
| Item Name | Pneumatic Muffler,exhaust-Intake |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Sound Seal, Inc. Dba Sound Seal, Inc |
| Status | ACTIVE |
| Muffler Design | BAFFLE |
| Tube Quantity | 1 |
| Body Shape | RECTANGULAR |
| Furnished Items and Quantity | GROMMETS-3 HOOKS-3 |
| 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 |
|---|---|
| RM01 PRIMARY | Sound Seal, Inc. Dba Sound Seal, Inc (USA) |
| Reference | Meaning |
|---|---|
| 52660 | 5/9 Secondary reference Orcon Corporation |
| 6780040-1 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 52660 | 5/9 Secondary reference Orcon Corporation Div Aerospace Division |
| KNC-100QQ PER 6780040-1 | 5/9 Secondary reference Peabody Noise Control Inc |
NSN 4330-01-373-9356 is a Pneumatic Muffler,exhaust-Intake, manufactured by Sound Seal, Inc. Dba Sound Seal, Inc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-373-9356 has 1 manufacturer part number on file: RM01 (Sound Seal, Inc. Dba Sound Seal, Inc).
4 possible matches (shared part number, not a government interchangeability claim): 4820-01-448-0503, 1420-01-566-9365, 1240-01-581-4106. Verify interchangeability with system specifications before substitution.
Key specifications for RM01: Overall Height: 2.000 INCHES MAXIMUM IN; Overall Length: 32.000 INCHES NOMINAL IN; Overall Width: 24.000 INCHES NOMINAL IN; Muffler Design: BAFFLE. 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.
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.