Hi I'm curious about a PVC valve in my hot tub. I had to replace the old one it was 12 years old chalky and galled. I have looked on the web for some kind of lube. All I can find as a reference is Stearic Acid as a mold release. Stearic Acid is a modified animal fat. I wracked my brain to remember what I had around the house that might have Stearic Acid and I thought NeoSporin might, I dunno, but that is what I used. It seems to work fine for now, but with time and heat I dunno.
Does anyone have a better Idea? I think the greasy stuff in the Neosporin might dry up and cake after some time.
Also I plan to machine some Delryn and when finished it will need some kind of lube too but it wont come in contact with human touch.
Oh and when milling Delryn can you please offer some advice for a first timer such as spindle RPM cutting lube requirements, clearances for brass slider operating under 150-180 degrees Fahrenheit. I want to make a solinoid driven diverting valve body for solar heated water. Oh yes, and do O ring seals hold up as a seal for a plunger in Delryn? Should I be using Delryn or something else like 6061 aluminum?
Thanks for your help and advice, from rainy California