tag:blogger.com,1999:blog-7686114651350806146.post5996488380903294728..comments2023-09-01T08:53:21.046+01:00Comments on Flounder's MindThots: Casting Custom C Ring Tools for Obscure Fountain Pens (II)Flounderhttp://www.blogger.com/profile/10833480240480323762noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7686114651350806146.post-55934735902185031942014-04-25T23:50:05.278+01:002014-04-25T23:50:05.278+01:00Hi Scrivelry! Red rubber grease is a grease deriv...Hi Scrivelry! Red rubber grease is a grease derived from vegetable oils rather than hydrocarbons, specifically for lubricating and protecting natural and synthetic rubber seals. I *think* it was first formulated a long time before silicon grease was developed. <br /><br />According to Castrol, one of its manufacturers, it is suitable for "applications where the lubrication of natural or SBR rubber components is required". eBay is the best place to pick up small quantities, as the 500g tubs common in auto stores would take a lifetime to get through.<br /><br />It's mostly used in brake caliper rebuilds, being compatible both with rubber seals and the hydraulic fluid they seal in. TBH the last 3 bad calipers I had, I just bought a reconditioned caliper and traded in my manky old one rather than spend all day cleaning it up and regreasing. <br /><br />Here's a <a href="http://msdspds.castrol.com/ussds/amersdsf.nsf/Files/2B514CB19C39E94F80257B750052AE99/$File/209618Castrol%20Red%20Rubber%20Grease.pdf" rel="nofollow">Material Safety Sheet</a> for Castrol's formulation.<br /><br />I've uploaded a new youtube video, <a href="http://flounders-mindthots.blogspot.co.uk/2014/04/casting-custom-c-ring-tools-for-obscure_25.html" rel="nofollow">embedded in the post following this one</a>, which includes the C ring screwing on and off the pen. Hope it helps you out, your idea sounds promising!<br />Flounderhttps://www.blogger.com/profile/10833480240480323762noreply@blogger.comtag:blogger.com,1999:blog-7686114651350806146.post-80986027622298497302014-04-25T04:00:49.604+01:002014-04-25T04:00:49.604+01:00What exactly is Red Rubber grease, and in what sor...What exactly is Red Rubber grease, and in what sort of store is it found? (Hardware? Plumbing? Automotive?)<br /><br />I managed to break a bit of the threads on an old plastic pen and have toyed with the idea of repairing it by fitting a reinforcement in there and then replacing the threads with black epoxy. My perhaps a better idea in my head than in actuality idea is to use some black epoxy, smooth it as best as possible and then grease the threads of the cap, screw the cap on and take it off, hopefully forming the missing parts of the thread as I do. Since the red rubber grease worked for you I thought it might be something to try...<br /><br />Scrivelry from FPN and FPGAnonymousnoreply@blogger.com