... :1.Three-way insulator bushing, wall sleeving, it is applied to cable branch box.2.Epoxy resin insulator bushing, wall sleeving, connector socket ... the ISO9001:20006.Round joint sleeve, wall bushing, european two-way insulatorNormal Operation Environment Condition : 1.Altitude can’t exceed ... II feculence condition.Exterior and installation drawing view :More types : Three way epoxy resin bushing seat