I thought that Moly was black?
Anyway the best lube for o rings is silicone grease - also will not diesel. Not so good on metal to metal contact and really not good on Aluminium.
What is the best lube for threads and 0 rings for pistol air cylinders and fillers please? I think I used to use a white moly grease but cant seem to lay my hands on it.
I dont want to use the wrong lube and destroy the rings
Regards,
Eric.
I thought that Moly was black?
Anyway the best lube for o rings is silicone grease - also will not diesel. Not so good on metal to metal contact and really not good on Aluminium.
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It was white and Im sure it was some sort of Moly grease and was pretty pricey.....I may find it when I have a clear out in my garage.
What I need has to be good on ally cylinder threads and the rings and Im sure the stuff I had was suitable.....damn my ancient brain cells!
Eric.
Eric,
The most commonly mentioned greases for O-rings are silicone based, and e.g. the Molykote greases.
These greases do not contain moly (molybdenum disulphide) - they are silicone greases thickened with a lithium soap or fumed silica.
Suitable grades are e.g. Molykote 55 :
http://www.dowcorning.com/applicatio...?prod=01889826
I have also found that Krytox oils & greases have worked well for me with O-rings :
http://www2.dupont.com/Lubricants/en...e_K22119_1.pdf
Have fun & a good weekend
Best regards
Russ
Many thanks for the comprehensive reply Russ, its much appreciated!
Looking at your links Im pretty sure it was the Molykote 55 I had but looks as if they have a shelf life and if I find the tube I think Id had it for at least 10 years so maybe Id better purchase a new tube.
Thanks again,
Eric.
Interesting, Ive just been googling and the Steyr Sport LG 100/110 major service kit comes with Molykote 33M grease.
Eric.
Eric,
If you PM me your address I can send you some Molykote 33M.
Have fun & a good Sunday
Best regards
Russ
Thats exceedingly generous of you Russ!
PM on the way.
Eric.
I have been using the ubiquitous Feinwerkbau grease on cylinder threads and "O" rings with total success for many years.
I always smear a tiny amount on the breach seal of every new match air rifle and pistol that I have bought and just keep it looking slightly "wet" by topping it up every 6 months or so ( depending on the amount of use).
I always smear some of this grease on the threads of my air cylinders and changing adaptors as well as the cylinder seal to keep them moving freely and well lubricated too.
It is very expensive for such a small tube, but you use so little of it at a time a tube can last for years.
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Another vote for the FWB Special grease.
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Krytox GPL205. i use this on Steyr o rings. Not cheap mind but lasts forever.
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I use German Lupus PTFE based grease, I was given it by a Walther tech, its a tiny tub like a pill box, and as a clue to how sparingly to use it, mine is hardly touched and its priced in D marks! You can still get it.
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