3.2.5 Auxiliary Business The business focuses on upholstery for the mainline coaches, including Shosholoza Meyl Premier Class, Kei Rail and Phelophepa Health Train. The business manufactures sitters, sleepers and repairs. Auxiliary business is responsible for the distribution, repairs and washing of tarpaulins that cover the carriages transporting maize and other foodstuff. The business also manufactures gear case seals for the Rolling Stock Business, which they put into wheel craters to lubricate the wheel to prevent oil spillages. They manufacture what is called "gummies" for the Coach Business, which are the rubber diaphragms that prevent metal hitting against metal when two coaches come together. For rotating machines they sometimes manufacture coil covers so that the coils they build for the locomotives are not exposed to dust.