A sealing system for a rotary machine , said sealing system comprising: a pair of circumferentially adjacent rotary components , each of said rotary components comprising: a platform ; a shank extending radially inwardly from said platform , said shank comprising a radially extending first side channel and an opposite radially extending second side channel ; and a radial seal comprising a first leg , whose lateral outer end is inserted, received and retained in said first side channel of a first of said pair of rotary components , a second leg , whose lateral outer end is inserted, received and retained in said second side channel of a second of said pair of rotary components , and a resiliently deformable body extending therebetween, said body comprising a U-shaped portion located generally centrally between said first leg and said second leg , wherein said first leg extends laterally from said body and said second leg extends laterally from said body opposite said first leg ; wherein said radial seal further comprises a generally planar bridge member coupled to one of said first leg and said second leg and extending towards the other of said first leg and said second leg ; wherein said first and second side channels cooperate to define a circumferential seal channel width at a downstream end of said first and second side channels and a circumferential channel entry width at an opposite upstream end of said first and second side channels , said channel entry width is less than said seal channel width ; said radial seal has a circumferential resting width greater than said channel entry width ; and said body is resiliently deformable inwardly such that said first and second legs are receivable through said channel entry width . a platform ; a shank extending radially inwardly from said platform , said shank comprising a radially extending first side channel and an opposite radially extending second side channel ; and a radial seal comprising a first leg , whose lateral outer end is inserted, received and retained in said first side channel of a first of said pair of rotary components , a second leg , whose lateral outer end is inserted, received and retained in said second side channel of a second of said pair of rotary components , and a resiliently deformable body extending therebetween, said body comprising a U-shaped portion located generally centrally between said first leg and said second leg , wherein said first leg extends laterally from said body and said second leg extends laterally from said body opposite said first leg ; wherein said radial seal further comprises a generally planar bridge member coupled to one of said first leg and said second leg and extending towards the other of said first leg and said second leg ; wherein said first and second side channels cooperate to define a circumferential seal channel width at a downstream end of said first and second side channels and a circumferential channel entry width at an opposite upstream end of said first and second side channels , said channel entry width is less than said seal channel width ; said radial seal has a circumferential resting width greater than said channel entry width ; and said body is resiliently deformable inwardly such that said first and second legs are receivable through said channel entry width . <EOS>