Two Small Bottles Of Old Car Radiator Leak Sealer (Harborne B32)

Hi all. As you can see in the photo these are two small bottles of car radiator sealer. As far as I am aware these are unopened and have never been used.but to be honest they have probably been sitting on my garage shelf for 10 years or more so condition unknown. I Have no idea if people still use these items, I suspect they were for use on the old style radiators not the modern ones but I thought I would just check before putting them in the bin. Kind regards Eric