AS138 Series

AS138 Electrical Connector Dust Caps

AS138 Series is designed as a protective cap for circular electrical connectors.

  • The only line of caps in the industry that meets the SAE aerospace specification AS85049/138
  • Tooled and engraved in full compliance with AS85049/138 and do not reference any other specifications
  • The engraving specifies the specification number, dash number, material code and the Caplugs part number for easy and positive identification
  • Includes proper ESD symbol as per the specification

The parts listed below are in ascending order in relation to the dash number and are repeated for each material code (A, B and C).

Material Codes:
A = LDPE (low-density polyethylene) Color: Per specification
B = Electrostatic dissipative Color: Black
C = Conductive Color: Black


Products with a material code of C have been fabricated from a conductive material that:

  1. Surface resistivity of less than 1 x 105 ohms/sq in accordance with ASTM test method D-257-78
  2. Meet the Static Decay requirements of MIL-PRF-81705E, Type I and Federal Test Method Standard No. 101, Method 4046