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BH3997-A — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BH3997-A: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: RUBBER CHLOROPRENE BODY, style_designator: THRU-HOLE, EXPANDABLE, material_thickness: 0.125 INCHES NOMINAL IN, base_outside_diameter: 2.400 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-366-2815, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
BH3997-A
NSN: 5340-01-366-2815
FSC: 5340 — Hardware, Commercial
CAGE: 00DW6 — GRIFFITH RUBBER MILLS INC DBA BAUMAN HARNISH RUBBER CO (USA)
SPECIFICATIONS
materialRUBBER CHLOROPRENE BODY
style_designatorTHRU-HOLE, EXPANDABLE
material_thickness0.125 INCHES NOMINAL IN
base_outside_diameter2.400 INCHES MAXIMUM IN
NSN5340-01-366-2815
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BH3997-A MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: THRU-HOLE, EXPANDABLE
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
BASE OUTSIDE DIAMETER: 2.400 INCHES MAXIMUM IN
•
MATERIAL: RUBBER CHLOROPRENE BODY
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORTHRU-HOLE, EXPANDABLE
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
BASE OUTSIDE DIAMETER2.400 INCHES MAXIMUM IN
MATERIALRUBBER CHLOROPRENE BODY
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 1
5544196Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BH3997-A?
BH3997-A is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace BH3997-A?
There is 1 known substitute for BH3997-A: 5544196. Substitute compatibility should be verified for your specific system.
What is the NSN for BH3997-A?
BH3997-A is cataloged in the U.S. Government catalog under NSN 5340-01-366-2815. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.