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 (316, 318) cooperate to define a circumferential seal channel width at a downstream end of said first and second side channels (316, 318) and a circumferential channel entry width at an opposite upstream end of said first and second side channels (316, 318), 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 (422, 424) 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 (316, 318) cooperate to define a circumferential seal channel width at a downstream end of said first and second side channels (316, 318) and a circumferential channel entry width at an opposite upstream end of said first and second side channels (316, 318), 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 (422, 424) are receivable through said channel entry width.