A pass-through assembly including a first wall having oppositely-directed inner and outer sides, the first wall defining a first opening extending from the inner side to the outer side； an elongated structure extending into the opening from the outer side of the first wall； a first material contacting the first wall and the elongated structure so as to at least partially seal the opening, and a second material different from the first material, the second material overlying the first material on the outer side of the wall, the second material adhering to the elongated structure and the first wall, the second material having at least one physical property different than a corresponding physical property of the first material.
