A tubing apparatus includes corrugated tubing including convolutions of peaks and valleys; an electrically conductive or semi-conductive, polymer jacket disposed along an exterior length of the corrugated tubing; wherein the jacket includes a conductive material in an amount sufficient to protect the corrugated tubing from damage resulting from electrical arcing at levels of at least 9 coulombs at a waveform of 10 microseconds1000 microseconds.

The invention relates to a wear ring (10) for mounting on a pipe, tube, cable or the like, more particularly on a corrugated pipe (14). The wear ring (10) comprises two ring halves (18a, 18b), which can be interconnected to form a ring (18), wherein a fastening structure (26), by structures of which the ring (18) can be fixed on the corrugated pipe (14), is provided on the ring halves (18a, 18b). The ring halves (18a, 18b) comprise connecting elements (22), by structures of which the ring halves can be interlockingly interconnected in an axial direction, and the fastening structure (26) is formed by at least one ring insert (26), which can be radially moved on the ring (18) and which can be locked on the ring (18) in a radially inner position in order to fix the ring (18) on the corrugated pipe (14).