An industrial supply house called McMaster Carr has fuel and lubricant rated PVC and Tygon hose in sizes 5/64. 3/32, 1/8, 3/16/ 1/4, 5/16, 3/8, 7/16, 1/2, 5/8, 3/4 ID. Color is "clear yellow". They advertise the Tygon as being higher quality than PVC and able to withstand lower temperatures than...