To provide a modular balkhead for clearly confirming whether or not to be truly airtight, that is, gas is diffused when causing failure after assembling the modular balkhead.
The modular balkhead is provided for airtightly pulling in a cable and a pipe by passing through a part of all kinds of buildings, and is respectively composed of two rectangular solid parts having a semicylindrical cutout part, and is constituted so as to airtightly surround the cable, the pipe or a liner, and is characterized in that the respective balkheads have a cutout part running in the horizontal direction to the cable or the pipe by surrounding the balkheads in an outside airtight surface, at least one hole is arranged in at least one of the cutout part, and the hole reaches up to an outside casing surface of the cable or the pipe or the liner.
BROEDER JAN