sed question!

[bruce]

Hey guys.

Thanks for the delete replies..

Got a quick sed question now..

test file::
head -2  sed.dat
228d98f0_f16a_11e6_9544_1ad613f05f7b,1486934882
22b93712_f16a_11e6_a6ad_1ad613f05f7b,1486934883

want to simply truncate/search/replace the end of each line starting
with the ","
to get

228d98f0_f16a_11e6_9544_1ad613f05f7b
22b93712_f16a_11e6_a6ad_1ad613f05f7b

the following isn't working
 sed -i 's/\,+\$//'  sed.dat

 sed -i 's/\,+$//'  sed.dat

I'm sure it's simple/trivial...

thoughts...