The Boot,dust and Moisture Seal, cataloged under National Stock Number 5340-00-171-3608, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Bellofram Corporation. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-00-171-3608 |
| Primary Part Number | 3-175-106-015-258-172-1 |
| Item Name | Boot,dust and Moisture Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| FSC Application Data | CONTROLLER,AIR PRESSURE,AIRCRAFT CABIN |
| Sealing Method | COMPRESSION |
| Mounting Method | COMPRESSION |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 137556-3 | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| 3-175-106-015-258-172-1 PRIMARY | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| 137556-3 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 5340-00-171-3608 is a Boot,dust and Moisture Seal, manufactured by Bellofram Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-171-3608 has 2 manufacturer part numbers on file: 137556-3 (Honeywell International, Inc Div Aerospace-Tucson), 3-175-106-015-258-172-1 (Bellofram Corporation).
Key specifications for 3-175-106-015-258-172-1: FSC Application Data: CONTROLLER,AIR PRESSURE,AIRCRAFT CABIN; Sealing Method: COMPRESSION; Mounting Method: COMPRESSION. 3 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.