Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
I have found on three exhaust system I have had on my bike using the SE seals that some of the material pushed into port opening. which would cause some flow restriction. after trying the copper novello seals they worked the best. Fuelmoto uses a similar style on there rebuilds.
Hmm. Well I've always used these graphite tapered ones. They're what the dealer sells instead of the copper ones, and they've always worked but not sure if the tapered design works on every head pipe, like the TH.