The termite insect damage prevention fitting in the underground electric line and the rubber wheel null which is used for that

摘要

PROBLEM TO BE SOLVED: To prevent termite damages to cable in an underground electric line. ;SOLUTION: In the underground electric line, wherein a pipe 2 is laid under the ground and a cable 2a is inserted in the pipe 2, termite intrusion preventing treatment is applied to a pipe junction part. For the treatment, rubber rings 1a, 1b to which a termite preventing agent of 0.1-0.4 wt.% is added are used. By the presence of the termite preventing agent, termites are hindered from intruding the inside of the pipe 2, and termite damages to the cable (a) are prevented.;COPYRIGHT: (C)2000,JPO