Sil-Glyde is great for these encoders, as well as PTO lube. It does not dry 
out, and is about the right consistency. A little goes a long way. My 
experience over 20 years (on PTO's). 
Also, TenTec says they are CLOSED, according to their web site. 
Greg, KC8HXO
     On Thursday, April 23, 2020, 11:34:46 AM EDT, Gary Follett 
<dukeshifi@comcast.net> wrote:  
 
 There is a lubricant in the encoders, a silicone based material whose intent 
is to both lubricate the contacting surfaces to prevent wear and to coat the 
parts with a movable material to prevent oxidation.
Cleaning will remove this material. The encoders will work for a while but the 
lubricant was put. There for good reasons.
Gary
W0DVN
> On Apr 22, 2020, at 9:17 PM, Bob McGraw K4TAX <rmcgraw@blomand.net> wrote:
> 
> The encoders are very simple stepped or segmented switches with a wiper much 
> like a carbon pot.  They get dirty, just like a carbon pot, and need 
> cleaning.  They are easy to clean which saves money and time.
> 
> 73
> 
> Bob, K4TAX
> 
> 
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