Ex d/Ex e Dome Head Stopping Plugs Metallic ATEX Zone 1

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PD-U Series of Dome Head Stopping Plugs provide a method of blanking off unused entries in hazardous area approved equipment whilst ensuring the integrity and Ex approval of the installation is maintained.


Dome Head Plugs are designed to be installed with a hex (Allen) key, from the outside of an enclosure and are supplied complete with a captive o-ring seal. The o-ring is located within a recess on the face of the product, helping to protect the o-ring from environmental damage and ensuring it is not displaced during installation.

Metallic Dome Head Stopping Plugs are designed for hazardous area applications and are certified to protection concepts Exd “Flameproof” and Exe “Increased Safety” for use in Zone 1 and Zone 2 applications.

Approved to the latest international standards, stopping plugs can be supplied with ATEX (CENELEC), IECEx, and GOST-R hazardous area certificates.

In addition CSA approval certificates can be supplied to cover use in North American and Canadian Class I Division 1 and Class I Zone 1 applications.



Part numbering system


ATEX Cartificate


IECEx Certificate


CSA Certificate


TR CU Certificate