A liner of Siligiene® translucent silicone overlaid with plies of silicone reinforced with polyester fabric. The number of plies varying depending on working pressure, bore size and required wall thickness. A galvanised steel wire helix can also be added, buried between the plies so that it is not exposed on either the inside or outside of the hose, for high or negative pressure applications or where improved flexibility is required. Additionally the hoses can be supplied with either convoluted or castellated walls where required.