Sierra Shields VAC Extra HDComm Hose w FDA Liner 2 Sierra Shields Vac Extra Heavy DutyCommercial Grade Hose has an FDA formula PVC with a white vinyl helix. The Vac. hose is rated for full vacuum and is resistant to mild chemicals and saltwater. The commercial hose features a smooth cover. Specifications I.D. 2 or 50.8mm Bend Radius 5 or 127.0mm Wt. C 57 Vac Rating 28 Application This hose is primarily used to bilge pump intake and discharge, potable water tank fill This hose is also used to dra