General Characteristics Item Description: PLASTIC,TYP I,CL OPTIONAL,GR B,FINISH OPTIONAL,.004 NOM.THK,SPEC L-P-378;6.00 IN.L,INSIDE;4.00 IN.W,INSIDE;INTERLOCKING SEAL CLOSURE IN
Identification
NSN: 4240-00-377-9401
NIIN: 003779401
FSC: 4240 — Safety and Rescue Equipment
FSG: 42 — Fire Fighting, Rescue, and Safety Equipment
General Description
The Bag,waterproofing,chemical-Biolo, cataloged under National Stock Number 4240-00-377-9401, is classified within Federal Supply Class 4240 (Safety and Rescue Equipment) of the Fire Fighting, Rescue, and Safety Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 7 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4240-00-377-9401
Item Name
Bag,waterproofing,chemical-Biolo
FSC / FSG
4240 / 42 — Safety and Rescue Equipment
Status
ACTIVE
General Characteristics Item Description
PLASTIC,TYP I,CL OPTIONAL,GR B,FINISH OPTIONAL,.004 NOM.THK,SPEC L-P-378;6.00 IN.L,INSIDE;4.00 IN.W,INSIDE;INTERLOCKING SEAL CLOSURE IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
Possible hazard — SDS may be required (DLA HMIC P)
Criticality Code
X
⇄Related Items7
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
5910-01-042-7319POSSIBLE MATCH
CAPACITOR,VARIABLE,AIR DIELECTRI
Possible match (shared part number)
6130-01-068-502614383-4432POSSIBLE MATCH
POWER SUPPLY
Possible match (shared part number)Frequency Electronics Inc
5950-01-122-72793146177-1POSSIBLE MATCH
TRANSFORMER,POWER
Possible match (shared part number)Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
2030-01-176-77615752POSSIBLE MATCH
PLATE,FLOATING TRAN
Possible match (shared part number)Datamarine Intl Inc
2920-01-194-7796407320POSSIBLE MATCH
SWITCH,LOCK,IGNITION
Possible match (shared part number)Hobart Bros Co
4820-01-315-6674V46CH-5POSSIBLE MATCH
VALVE,REGULATING,FLUID PRESSURE
Possible match (shared part number)Johnson Controls Inc Control Products Div
5940-01-725-27895752POSSIBLE MATCH
ADAPTER,RADIO FREQUENCY CABLE
Possible match (shared part number)Pomona Electronics
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
4240003779401
5/1Secondary reference
U.S. Government activity
5-75-2
5/1Secondary reference
U.S. Government activity
D5-75-3-MIL B 51170
5/1Secondary reference
U.S. Government activity
MILB51170
2/2Government specification standardization
U.S. Government activity
Related Parts
5910-01-042-7319POSSIBLE MATCH
CAPACITOR,VARIABLE,AIR DIELECTRI
6130-01-068-5026POSSIBLE MATCH
POWER SUPPLY
14383-4432
5950-01-122-7279POSSIBLE MATCH
TRANSFORMER,POWER
3146177-1
2030-01-176-7761POSSIBLE MATCH
PLATE,FLOATING TRAN
5752
2920-01-194-7796POSSIBLE MATCH
SWITCH,LOCK,IGNITION
407320
4820-01-315-6674POSSIBLE MATCH
VALVE,REGULATING,FLUID PRESSURE
V46CH-5
5940-01-725-2789POSSIBLE MATCH
ADAPTER,RADIO FREQUENCY CABLE
5752
Frequently Asked Questions
What is NSN 4240-00-377-9401?
NSN 4240-00-377-9401 is a Bag,waterproofing,chemical-Biolo, classified under FSC 4240, Safety and Rescue Equipment. Status: active.
What NSN replaces 4240-00-377-9401?
7 possible matches (shared part number, not a government interchangeability claim): 5910-01-042-7319, 6130-01-068-5026, 5950-01-122-7279. Verify interchangeability with system specifications before substitution.
What are the specifications of 4240-00-377-9401?
Key specifications for 4240-00-377-9401: General Characteristics Item Description: PLASTIC,TYP I,CL OPTIONAL,GR B,FINISH OPTIONAL,.004 NOM.THK,SPEC L-P-378;6.00 IN.L,INSIDE;4.00 IN.W,INSIDE;INTERLOCKING SEAL CLOSURE IN; End Item Identification: 4240-00-542-4450 SM,4240-00-542-4451 MED,4240-00-542-4452 LG,4240-00-377-9401,4240-00-803-5839,4240-00-926-4199 SM,4240-00-926-4200 LG,4240-00-926-4201 MED. 1 specification is documented in the U.S. Government catalog.
Is NSN 4240-00-377-9401 hazardous material?
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.