For leak testing automotive car radiators, the Pipestoppers division of Huntingdon Fusion Techniques Limited manufactures ready made kits of plugs to make the sealing of all holes easy and fast for reliable leak testing.The plugs are made from nylon and natural rubber, so they will not corrode and seize up. They can also be totally dismantled for cleaning and part replacementEach kit comprises.Also included are 4 x 0.5" BSP nipple caps and 4 x 0.5" BSP swivel nuts and hose tails. Plus the rigid ABS plastic storage case with special cut to size foamFor larger diameters see the details of the Commerical Vehicle leak test plug kit. All plugs are available as individual items for replacement purposes.Sizes from 1.5 inch and above have an 1/2" BSP threaded hollow shaft for connecting air lines to pressurise the items under test. Size QtyRange (mm) Pressure Solid Shaft Plugs psi bar 0.5" 2 12 - 16 100-150*7-10* 0.75" 2 18 - 24 150* 10* 1.0" 2 23 - 32 130* 9* 1.25" 2 31 - 42 70* 5* 1.5" 2 37 - 54 60* 4* Hollow Shaft 0.5" 2 12 - 16 100-150*7-10* 0.75" 2 18 - 24 150* 10* 1.0" 2 23 - 32 130* 9* 1.25" 2 31 - 42 70* 5* 1.5" 2 37 - 43 44* 3* 2" 2 48 - 65 18-50* See over for Commerical Vehicle Radiator and Inter-cooler test plug kit. > *= results depend upon exact ID of the tube/pipe, number of turns, condition of the inside of the pipe and the material. 1.2-3.4* size="-1">