What lube for air compressor piston and bore

[wrcsixeight]

I took my Q industries 12 volt air compressor apart yesterday to retap the threads for 1/4 NPT standard air fittings and found that the few times I ran it without the air filter really gunked up the internals.

Here is the piston cup:

Here is the bore before cleaning:

After:

I used spray silicon and q tips to clean the piston ring and Napa Syl glide to relube it, and the compressor works better than ever, but I wonder if there is a better product for the piston skirt cup/ seal and bore.

 

[JHZR2]

What is the syl glyde temperature rating?

 

[wrcsixeight]

Quote:
SPECIAL PROPERTIES: High Film Strength. Stays Put. Water Repellent. Won't Run or Melt. Effective from -20° to +600°. Prevents Freezing. Harmless to Rubber.
APPLICATIONS: Brake pads, calipers, rubber boots, fan belts, V-Belts, weather stripping, trunk seals and bumpers, speedometer cables, window channels, hood stops and pads, and rubber gaskets.
This is a NAPA private branding of American Grease Stick Company (AGS) Sil-Glyde SG-8.


After finding this PDF info sheet, perhaps I used one of the best products I could for this application. Glad I had some on hand.

http://www.agscompany.com/images/stories/lubricants/automotive/sil-glyde_lubricating_-_tds.pdf

 

[tom slick]

That's probably a Teflon seal, no lube needed.