Quote Originally Posted by NickG View Post
I am after a piece of 22mm bore by 1.5mm wall to give 25mm od, Charlie gave me a link but they are on holiday, but no rush I am working on the 21mm at the moment.

The first comp tube I sleeved, was a 26mm hw, I sleeved reamed and then honed to 25mm, it was a right faff, and difficult to size properly as my bore comparator does not go down to 25mm.
The precision tube is very good to start with as its drawn.

My elder brother, ( a retired engineer), put me on to labrynth sealing its used on gas compressors where lube and friction are important, just experimenting at the moment.
cant do 22mm id x 1.5 wall nick but got an idea .
especially if its for a tx......say it is