... acid,alkal The Flexible Rubber Joint is a single sphere design with less length, the supply range is from 25mm to ... Hg) can be supplied for certain sizes9, Special grooved flange ring design, prevent rubber end pull out10, Solid galvanized steel floating flanges ... of solid steel rings12, No gaskets required; integrally rubber flanged design, no gaskets required, DIN PN10/16 drilling standard, other ...