https://irkns.ru/katalog/kolonki-toplivorazdatochnye-i-zapchasti/zapchasti-k-importnym-trk/silfon-dlya-truboprovoda-du-50-500-mm-nerzhavejka-1891-detailhttps://irkns.ru/katalog/kolonki-toplivorazdatochnye-i-zapchasti/zapchasti-k-importnym-trk/silfon-dlya-truboprovoda-du-50-500-mm-nerzhavejka-1891-detail