PartsTable
Technical Data Sheet
Download PDF

BE495 — BOOT,DUST AND MOISTURE SEAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

BE495: BOOT,DUST AND MOISTURE SEAL.

The BOOT,DUST AND MOISTURE SEAL is a the manufacturer industrial component. Key specifications include material: GLASS FIBER AND RUBBER CHLOROPRENE BODY, body_height: 4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN, overall_height: 4.750 INCHES MINIMUM AND 5.250 INCHES MAXIMUM IN, sealing_method: MECHANICAL, mounting_method: CLAMP AND FRICTION, style_designator: THRU-HOLE, EXPANDABLE. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-419-5944, 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
BE495
NSN: 5340-00-419-5944
FSC: 5340 — Hardware, Commercial
CAGE: 05399 — BEMCO, INC (USA)
SPECIFICATIONS
materialGLASS FIBER AND RUBBER CHLOROPRENE BODY
body_height4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
overall_height4.750 INCHES MINIMUM AND 5.250 INCHES MAXIMUM IN
sealing_methodMECHANICAL
mounting_methodCLAMP AND FRICTION
style_designatorTHRU-HOLE, EXPANDABLE
material_thickness0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
fsc_application_dataDRIVE MECHANISM,HELICOPTER
base_outside_diameter5.030 INCHES MINIMUM AND 5.045 INCHES MAXIMUM IN
body_outside_diameter6.000 INCHES NOMINAL IN
opening_inside_diameter4.000 INCHES NOMINAL IN
mounting_device_quantity1
NSN5340-00-419-5944
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: BE495 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
•
FSC APPLICATION DATA: DRIVE MECHANISM,HELICOPTER
•
SEALING METHOD: MECHANICAL
•
OPENING INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 6.000 INCHES NOMINAL IN
•
MOUNTING METHOD: CLAMP AND FRICTION
•
BODY HEIGHT: 4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: THRU-HOLE, EXPANDABLE
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT4.750 INCHES MINIMUM AND 5.250 INCHES MAXIMUM IN
FSC APPLICATION DATADRIVE MECHANISM,HELICOPTER
SEALING METHODMECHANICAL
OPENING INSIDE DIAMETER4.000 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER6.000 INCHES NOMINAL IN
MOUNTING METHODCLAMP AND FRICTION
BODY HEIGHT4.250 INCHES MINIMUM AND 4.750 INCHES MAXIMUM IN
STYLE DESIGNATORTHRU-HOLE, EXPANDABLE
MATERIAL THICKNESS0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM IN
MOUNTING DEVICE QUANTITY1
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 2
204-011-462-1Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
204-011-462-001Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
Ready to buy BE495?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is BE495?
BE495 is a BOOT,DUST AND MOISTURE SEAL.
What parts can replace BE495?
There are 2 known substitutes for BE495: 204-011-462-1, 204-011-462-001. Substitute compatibility should be verified for your specific system.
What is the NSN for BE495?
BE495 is cataloged in the U.S. Government catalog under NSN 5340-00-419-5944. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — BE495

✓ 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.