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Cross-section drawing of DU-178
Cross-section — DU-178Not to scale
Specification

As drawn.

Specification for DU-178
Width 1.306" 33.2 mm
Height 0.575" 14.6 mm
Flange 0.220" 5.6 mm
Material Rubber
Type Sponge
Durometer 2A4 (sponge grade)
Colour Black
Mount Push On
Bulb position Side
Core 1.120in Wire
Second durometer70 Durometer

Dimensions in inches to three places, as on the drawing; millimetres computed.

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