Silicone 'O' rings are stronger than ordinary black ones but, now I know what the thing is to be used for, I think this is an ideal use for 'Polymorph' or 'Jett set' or one of the similarly named and identical products. *http://tinyurl.com/3x9nylp .* Turn a groove around the centre of the periphery, fill it with a long sausage of this stuff and screw it together before it sets. ( you may heed to drill a couple of radial holes in the bottom of the groove to stop the plastic rotating ). It should give you a good friction fit. If not, you can cut through the polymorph, pop a little packing under it and reassemble - then it will fit tight. Alternatively, if you cut the groove in the female threaded portion, the natural shrinkage of the ploymorph will ensure that it is tight. The stuff softens at a temperature you can mold it in your hands and sets like nylon so the effect you get will be like a nylok nut. I've been using this stuff for in situ moulded leadscrew nuts on small machines for several years now and it lasts and lasts with no appreciable wear.
Ian ________________ Ian W. Wright Sheffield UK Andy Pugh wrote: > On 21 July 2010 17:34, Gene Heskett <gene.hesk...@gmail.com> wrote: > > >> I thought of that Mark, but most of that stuff takes 425+F to soften it for >> later dis-assembly. Can the rest of the stuff tolerate about 475F for long >> enough to take it apart, Andy? >> > > I am not sure how the O-rings would cope (probably OK) > > The part does not have to seal air (in fact, that would be > counterproductive). It is the lower "pull" plate for my drawbar > release. > > http://imagebin.ca/view/yPr__7Mi.html > > > > ------------------------------------------------------------------------ > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.851 / Virus Database: 271.1.1/3019 - Release Date: 07/21/10 > 07:36:00 > > ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
