| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an airtight treatment method for a finished material penetrating part, capable of positively maintaining airtightness and confirming the situation of airtight treatment after execution. SOLUTION: A penetrating part treatment plate 10 is equipped with a seat part 11, composed of an annular flat plate, and a cylindrical penetrating member holding part 12. An annular backup material 20 composed of an elastic body is sandwiched and a sealing material 22 is annularly filled, between the penetrating member holding part 12 and a piping 1. Furthermore, the annular backup material 21 composed of an elastic body is interposed, and a sealing material 23 is filled annularly, between the seat part 11 and a finish surface 7 of a ceiling board 2.</p> |
