Got my new vesconite prop shaft bushes

[sdowney717]

installed.
Very nicely made and machined, a hard grey solid plastic with 6 water channels. I put them in the freezer overnight and pressed them in using a press.
If they live up to their claims about very low wear well worth the price, only paid $23 per bushing. They make vesconite and vesconite hi lube. It is important to freeze then in the freezer or use dry ice. They shrink and it is easier to install, when they warm up they lock in place.

http://www.vesconite.com/industry/marine/marine.htm

[Aramas]

God I hate proprietry polymers. The section on the website following "What is Vesconite" should read: "We're not telling". It's a polymer. Whoopee. So is wood. So is lettuce, for that matter.

Just another PTFE bearing with some fruity filler? Or a non-Newtonian, pan-dimensional quantum probability field on a stick? Who can tell?

[Ross M]

My bet is a polyimide like DuPont's Vespel or polyamide-imide similar (Amoco's?) Torlon.

In the right app, both are amazingly high performing materials...

[sdowney717]

who knows what it is made of..
You can also have them machined for a sliding slip fit into the housing and use loctite or an epoxy to secure it, so you would never need to worry about finding a press again. With a press fit, the bushing actually shrinks its internal diameter ever so slightly, using a slip fit the internal bore would be machined for a tighter clearance. I estimate my clearance now at a little under .010 to the shaft