Abbey gunlube sm50

[WILBA]

Contacted abbey concerning their sm50 gunlube. Asked if it was ok to use on the slideing action on my skan r32. Said i was concerned as it was molybdenised silicone oil and was worried it might cause wear due to the silicon oil present. His email reply was. " i have a bottle of sm50 on the desk infront of me and it does not say silicon oil at all. Abbey sm50 has never contained silicon oil and never will" then i sent a picture of the label saying "molybdenised silicon oil" back to him. Granted this bottle is 10yrs plus years old but the "never has"quote just made me have to send the pic of the bottle label to him. Still awaiting a reply

[Barryg]

Contacted abbey concerning their sm50 gunlube. Asked if it was ok to use on the slideing action on my skan r32. Said i was concerned as it was molybdenised silicone oil and was worried it might cause wear due to the silicon oil present. His email reply was. " i have a bottle of sm50 on the desk infront of me and it does not say silicon oil at all. Abbey sm50 has never contained silicon oil and never will" then i sent a picture of the label saying "molybdenised silicon oil" back to him. Granted this bottle is 10yrs plus years old but the "never has"quote just made me have to send the pic of the bottle label to him. Still awaiting a reply

It might be better to phone and ask to speak to the managing director this is what I did and he will explain that sm50 does not contain silicone but has some of the benefits of silicone oil, I got him to repeat to me that it does not contain silicone oil

[oldcurmudgeon]

Under absolutely no circumstances should you put in the cylinder of a spring or gas ram air rifle. The effect is to create the mother and father of all diesels. Once experienced, never ever will you do it again unless you have a mortal enemy you really really don't like, and you want to get your own back.
And yes it is a mixture of moly and silicone.

[Barryg]

And yes it is a mixture of moly and silicone.

How do you know this, where did you get this info?

[rancidtom]

It used to say it on the label as above that it was "molybdenised silicone lubricant" but that no longer appears on the label, the abbey website https://www.abbeysupply.com/iqs/cpti...aning-products describes it as "does not evaporate like mineral oil" so perhaps Abbey are using a synthetic lubricant that isn't silicone based and cannot be classified as a mineral oil?
I can find no COSHH data sheet for the product (surely they must produce one?) which may confirm or deny the presence of silicone lubricants in the mixture.

[oldcurmudgeon]

Back in the day you could buy Abbey silicone oil, or SM50 in the same size bottles and it was very easy to mix moly and silicone to create SM50.
On their own both are very good at what they do, but when mixed together they work against each other and fail to do as intended.
Basically silicone for piston seals and moly for metal to metal contact and nothing else.