Turbine transition duct apparatus

A gas turbine transition duct apparatus comprising:

• a first turbine transition duct comprising a first generally tubular main body having first and second ends, and a first collar coupled to said main body second end, said first collar having a first upper portion, a first lower portion and first side portions, one of said first side portions having a first recess;
• a second turbine transition duct comprising a second generally tubular main body having third and fourth ends, and a second collar coupled to said main body fourth end, said second collar having a second upper portion, a second lower portion and second side portions, one of said second side portions having a second recess;
• said one first side portion being positioned adjacent to said one second side portion such that said first and second recesses are located adjacent to one another, said first and second recesses defining a first slot;
• and
• a strip seal positioned in said first slot and comprising a sealing element and a spring structure, said spring structure applying axial forces upon said one first side portion, said one second side portion and said sealing plate.