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 Post subject: Lyman moly
PostPosted: Mon May 18, 2015 5:52 pm 

Joined: Mon Feb 02, 2015 1:53 pm
Posts: 5
Location: Sudbury, ON
Is Lyman super moly spray appropriate for the plastic piston seal on a Gecado 5 pistol. Thanx

 Post subject: Re: Lyman moly
PostPosted: Mon May 18, 2015 7:02 pm 

Joined: Tue Jan 29, 2013 6:54 pm
Posts: 2411
Location: Northeastern Ontario
Lyman moly spray doesn't have the same amount of molybdenum disulfide (MOS2) that is usually used to lubricate the internals of a spring piston airgun. The Lyman product is used for coating bullets and as a bullet mould release agent.

The moly used in spring piston airguns has 65 - 70% MOS2. The product you need is something like this: ... ste/dp/860
http://www.specialtyshootingsportsoutdo ... -1-oz.html
http://www.specialtyshootingsportsoutdo ... -2-oz.html

 Post subject: Re: Lyman moly
PostPosted: Tue May 19, 2015 3:26 am 

Joined: Sat Jan 25, 2014 9:16 pm
Posts: 1271
Location: United States
The moly spray is likely mosty its carrier, but once dry it should be pure moly. So yes I'd totally use it.
You could also spray a clean glass table, let it dry, then scrape up the pure moly so you can apply directly to the seal as a dry lube. Ideally the surface to be dry lubed should be roughened with sandpaper, maybe 320, then you rub the powder into it so it fills into the scratches. Or sand the seal and spray it, let dry, rub in, then maybe spray another coat which you don't rub.

If you save powder from spraying glass you could then use it for other parts too, and for mixing it with grease and/or oil to get all parts in need. I do similar with tungsten disulfide powder, which I buy as powder. I rub it into parts as powder, then mix with grease and/or oil to make what I want. It's better than moly paste not just because tungsten is better, but embedding the surface with dry powder is important, and you control what base of grease/oil you use and the % added. When you buy moly paste you don't know what base you're getting and it's usually too thick.
The tungsten powder is not only better and more versatile for the gun, but many other projects around the house, car etc. Tungsten is $10 (US) per oz:

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