thread to sew hypalon

[603doug]

Pulled tubes off to sew a small length of broken seam which hold rope cord. Used awl and waxed polyester thread but after careful inspection the whole seam needs to be repaired (Die of old age using awl on the whole seam) Have a heavy duty sewing machine but what thread should i use. A friend who sails suggest sail thread with uv protection. Open to any suggestion
thanks

[Channelwatch]

Polyester is the most common in marine canvas and sail applications but the best is Tenara. It can be ordered from www.sailrite.com but it's very expensive.