ro-59 isn't going to do a damned thing without an oven cure (which would exceed safe temperature for the delrin sliders). i still don't understand why people use that stuff. i've been making available a similar product that's used for demolding called trasys that is a fluorinated polymer in a water substrate with a thermoset binder. ptfe doesn't just stick to stuff. like all fluorinated materials, it's extremely low energy, which means it vehemently refuses to stick to things. this is not-so-coincidentally why it's a good solid lubricant.
krytox is three parts:
first, PFPE oil. this is a supremely fascinating fluorinated copolymer that presents as an oil and because it's a very complex copolymer, can be distilled in a large number of different ways to achieve varying material properties. above all though, it's inert, has ungodly vapor pressure and temperature, and is painfully resistant to pretty much every solvent known to man. note that substances that are PFPE alone are marketed as Krytox Oils.
second, PTFE flakes. the size and shape of the average flake is carefully controlled in all krytox grease products to achieve consistency and longevity -- ptfe melts, pfpe does not -- as well as minimizing separation when applied while still being able to spread uniformly, handle high speed, temperature or pressure applications, low speed (high solid) applications, etc. etc.
third, binders. meeting application goals sometimes requires binders. the exact composition of the binders is a trade secret as far as i can tell. to maintain material properties, they're almost certainly some kind of fluorinated polymer, but that's all i know. these are also designed to maximize surface adhesion between all components of the grease.
the combination of binders, ptfe and oil consistency are also carefully controlled to hit 2g/ml density across the product line. as far as i can tell, that's a marketing thing.
anyway, RO-59, as best as i can tell, is a bake-on fluorinated coating. if that's what you're looking for, i have a much better product for that that's also a ton cheaper.
dow corning has their moly line of lubes that are high molybdenum synthetic oils (polyolefin based maybe?). these are for metals. molybdenum is used to even out metal wear.
finally, silicones. silicones are thermosets. they're also extremely inexpensive. thermoset means that they are like viscous solids before curing. this means they can be used as a grease (just don't cure them by accident!). silicones are used all over the place (eg, factory lube in a cherry switch) because they are so inexpensive, and frankly pretty effective for the price. that said, silicones that are solid enough to be used as a lubricant are also very viscous, so silicone greases tend to be heavy. they also have trouble isolating contaminating solids. silicone greases very quickly become grinding paste when exposed to contaminants.
