The present invention is directed to a gas turbine transition duct having a collar with at least one notched section, a seal apparatus for sealing a relief opening defined between opposing first and second transition ducts and {HEAD ~ a gas turbine transition duct apparatus} comprising first and second transition ducts and {TAIL ~ a seal apparatus} 
comprising
The present invention is directed to a gas turbine transition duct having a collar with at least one notched section , a seal apparatus for sealing a relief opening defined between opposing first and second transition ducts and { HEAD ~ a gas turbine transition duct apparatus } comprising first and second transition ducts and { TAIL ~ a seal apparatus }
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