i've used Thermotec wrap before, and haven't had dramas
and after fitting it i sprayed it with their High Temp paint too, it helps to hold it together imo.
most Auto Speed shops sell it.
i used some leftover wrap from a Thermo Tec Turbo kit i had, and did the exhaust on the Custom Orion.
it was the blanket style wrap, i trimmed it about 3.5" wide and wrapped it long ways along the pipe.
where the join was at the underside of the pipe i ran a bead of high temp silicon along it to hold it together.
the blanket wrap from the turbo kit had the foil on one side, i fitted that foil side against the pipe.
you could grab it and hold on for 5 or so seconds before it got too hot.
it looked like this-
http://www.ebay.com.au/itm/THERMO-T..._Parts_Accessories&hash=item2a2797004c&_uhb=1
http://www.ebay.com.au/itm/Thermo-T...?pt=Race_Car_Parts&hash=item53f6d7950f&_uhb=1
and i also used High Energy wrap,
bought from Autobarn for about $15, on the PW50, but havent had it out yet.
it feels pretty good quality though.
just make sure you wet it well, and put it on tightly wrapped when you fit it, and clamp it up so it cant unwrap.
the roll wasn't that long so make sure it covers where you need it too.
found some more Thermo Tec tape, a 50' roll of 2"-
http://www.ebay.com.au/itm/Thermo-T..._Parts_Accessories&hash=item3a6f5209ff&_uhb=1
PW50 High Energy wrap-
and on the Orion, you can just see the wrap here, up under the tank/seat-