Belt Covers: The primary purpose of the cover is to protect the belt carcass against damage. The requirements of the cover is to work satisfactorily in contact with the materials to be carried by the belt. For this purpose, sufficient thickness (not less than 1.0 mm) of top and bottom surface covers of different rubber compounds and plastics are used. Covers in the following grades are available:
(i) Grade M24: Natural rubber compound with superior resistance to cutting, gauging
and abrasion.
(ii) Grade N17: Compound rubber with high abrasion resistance with inferior cutting and
gauging resistance compared to M24 grade.
(iii) Grade N17(Synthetic): Composed mainly of synthetic rubber with higher abrasion resistance. Belt made of carcass with chemical or other superior bonding system should be used for this grade.