Ko ngā rawhi whakatārewatanga kei roto i te whānau DS he mea hanga ki tētahi anga kirihou hono me tētahi whakaurunga tiaki elastomer me tētahi arai whakatuwhera. Ka mau te tinana o te rawhi mā te whakakīkī i tētahi pūtu whakauru.
E whakamahia ana ngā rawhi DS hei whakahohe i te whakatārewatanga nekeneke o ngā taura porowhita, papatahi rānei e taka ana Ø 5 ki te 17mm i runga i ngā pou waenga e whakamahia ana mō ngā whatunga tohatoha tae atu ki te 70m te whānui. Mō ngā koki neke atu i te 20°, e taunakihia ana kia tāutahia he punga takirua.