Amazon.com: stonylab Red Vacuum Rubber Tubing, 45/64 inch OD 5/16 inch ID Vacuum Tubing Natural Rubber Tube for Vacuum, 5/16 x 15/32 inch Fit on stonylab Glassware Labware, 10 Feet : Industrial & Scientific
Fisherbrand Pressure and Vacuum Rubber Tubing Red tubing in 12ft. (3.7m) | Fisher Scientific
White Natural Rubber Vacuum Pump Tube Suction Hose Conveyor Pipe Air Water Oil | eBay
Amazon.com: Stonylab Vacuum Rubber Tubing, 12mm (15/32'') OD 8mm (5/16'') ID Vacuum Tubing Natural Rubber Tube for Vacuum, 8 x 12mm(5/16'' x 15/32'') Fitting on StonyLab Glassware Labware - 1m (3.3 Feet) :
Rubber Vacuum Tubing, 5/16'' ID | 10ft - Goldleaf Scientific
Amazon.com: Labasics Vacuum Rubber Tubing, 15/32'' OD 5/16'' ID Vacuum Tubing Natural Rubber Tube for Vacuum, 5/16'' x 15/32'' Fitting on Labasics Glassware Labware, 3.3 Feet : Industrial & Scientific
White Natural Rubber Vacuum Pump Tube Suction Hose Conveyor Pipe Air Water Oil | eBay
Natural Latex Rubber Tubing
Vacuum Tubing, Black Rubber, 5/16 I.D. X 13/16" O.D. X 1/4" Wall Thickness, 9 3/4' Length | Southern Labware