555 FlexFix UL Listed Tape sealing the joints on my rigid aluminum dryer ducting

[pex006]

Hi. I have the 555 FlexFix UL Listed Tape sealing the joints on my rigid aluminum dryer ducting. Is this an acceptable use for the 555 FlexFix tape or is it only for flexible ducting?

http://www.homedepot.com/p/Nashua-T...-555-FlexFix-UL-Listed-Tape-1207803/100575721