Dust and Moisture Seal Boot

443ID

443ID
(NSN) National Stock Number
5340-00-257-0499
Federal Supply Classification
5340 Commercial Hardware
Item Name Code
19302
Schedule B Code
-
Summary

1.844 inches nominal overall height, 0.125 inches nominal material thickness, 2.187 inches nominal body outside diameter, 1.937 inches nominal base outside diameter, 1.875 inches nominal base inside diameter, 0.656 inches nominal opening inside diameter

DAC HCC DMIL RNCC
5 - - 3
RNVC SADC MSDS RNAAC
9 - - TG
Identification

A flexible, nonmetallic item designed to prevent entry of dust, moisture and other contaminants into critical areas around shafts, levers, electrical wires and hoses. Sealing may be either static or dynamic. The item may include mounting hardware (support plates, clamps and the like). Excludes:bellows, protection; grommet, nonmetallic; and cable nipple, electrical. See also cap, electrical; cap, protective, dust and moisture seal; and shield, electrical connector.

INC FIIG Concept Condition
19302 A02000 - 2
Specifications
Overall Height
1.844 inches nominal
Details The distance measured in a straight line from the bottom to the top of an item.
Material Thickness
0.125 inches nominal
Details A measurement of the smallest dimension of the material,in distinction from length or width.
Body Outside Diameter
2.187 inches nominal
Details The length of a straight line which passes through the center of the body,and terminates at the outside circumference.
Base Outside Diameter
1.937 inches nominal
Details The length of a straight line which passes through the center of a base,and terminates at the outside circumference.
Base Inside Diameter
1.875 inches nominal
Details None.
Opening Inside Diameter
0.656 inches nominal
Details The length of a straight line which passes through the center of the two surfaces of a circular opening,and terminates at the inside circumference.
Material
rubber body
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Style Designator
thru-hole
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
P U - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
95100 - S -
RVC WCC TCC SHC
- 846 Z 9

Certified Supplier

Order with confidence. We are a valued certified supplier serving customers in the military and aerospace industries.

  • Genuine Manufacturers Parts
  • 100% Product Inspection
  • 7 Year Sales Record Retention
  • Fast On-Time Delivery
  • HAZMAT Certified
  • Global Shipping
Manufacturer
LIBERTY VENTURES INTI, LLC
CAGE: 79410
KING GEORGE , VA , 22485-5942
UNITED STATES
View Products
FAQs
Frequently asked questions for NSN 5340-00-257-0499
What is the NIIN of the NSN 5340-00-257-0499?
The National Item Identification Number (NIIN) of the NSN 5340-00-257-0499 is 00-257-0499
When the NSN 5340-00-257-0499 was assigned to the Federal Catalog?
It was assigned 53 years ago, on Fri, Mar 19, 1971
Does the NSN 5340-00-257-0499 contain any precious metals?
Type/content is unknown
Does the NSN 5340-00-257-0499 contain any hazardous material?
No information in HMIRS

Can't Find It

If you didn't find what you need, don't worry, we're here to help! Our team is ready to help you find exactly what you need. Click below to contact us.

Who we are?

We are a trusted provider of milspec and aerospace hardware, offering high-quality consumables and parts. With a commitment to excellence, we guarantee reliable and fast delivery through our network of logistics centers. Our mission is to support the aerospace industry with precision and efficiency.

Contact
3555 Agricultural Center Dr.
St. Augustine, FL, 32092
United States
© 2025 Aerospace Hardware Store, Inc. All rights reserved.
Made in USA