 |  | | | |  | |  |  | Alternative to Divers Grease? |  | |  |  | |
 Posted: Mon Nov 16, 2009 5:56 pm |
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| Mark5043 |
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| Joined: 12 Apr 2009 |
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Hi everyone,
I received my parts today from Crosman,in order to covert my .177 Discovery into .22.I have often heard the mention of divers grease,to lube the seals upon installation.I don't have divers grease,but can I use something like 45wt. silicone shock oil for RC cars for this purpose????Or better yet,could I use dielectric silicone grease,from an auto parts store? |
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| Posted: Mon Nov 16, 2009 8:10 pm |
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| kanyon |
| Silver Status Member |
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| Joined: 09 Aug 2008 |
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| Location: New Zealand |
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If you are going to lube seals/O-rings anything rubber..
Why not use the grease made for the job..
RUBBER GREASE....
Its all I use on my PCPs....fill probe / pellet probe O-rings
Pete
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| Posted: Mon Nov 16, 2009 8:23 pm |
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| Mark5043 |
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| Posted: Thu Nov 19, 2009 11:24 am |
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| Amigo |
| Veteran Member |
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| Joined: 18 Sep 2008 |
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If my old memory serves me right divers grease, rubber grease and dielectric grease are all a silicone base grease rather than petroleum base.
Petroleum base can spontaneously combust in the presence of high oxygen concentrations and/or highly compressed "air". It also deteriorates many types of "rubber" and causes it to swell.
Hope this helps,
Kanyon: Your castor oil based grease is a new one on me, I'll have to check it out. Who says an old dog can't learn new tricks?
Thanks for the info.
Amigo |
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| Posted: Tue Nov 24, 2009 10:40 pm |
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| Bozo |
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35 years ago, when I was an active diver, the shop I frequented sold small (2 oz?) tubes of "Zip-slip", a silicone grease manufactured for the food industry. Used it on all O-rings and sealing surfaces. Just a few years ago I ran across the bag with my dive gear in it and I took a few things apart to see how they were holding up. The O-rings and edges of the diaphragms were still in good shape, the inner parts of the diaphragms were there was no need for the grease had deteriorated. I have no idea if Zio-Slip is still made or where to get it, but a year ago I was in a plumbing supply store and they had small containers of PlumberMaster, Inc silicone grease, Cat. No. 84200. I had them find the MSDS and found out it was food grade. It's been working fine on various places, including O-rings. It reminds me of Zip-Slip, but it's not identical. I think the key is to make sure whatever silicone compound you're using is food grade, there by insuring there is no petroleum at all in it.
I'm sure the PBR rubber grease recommended is good stuff, but I've never seen anything like it in the U.S. (It's castor oil based.)I asked a few mechanics I know, and they all just use brake fluid for lubrication when assembling brake parts (which is what PBR is manufactured for). I don't know what is in silicone dielectric grease or silicone shock oil, but if they aren't food grade or state specifically that they have no petroleum in them, I don't think I'd trust them.[img][/img] |
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_________________
Sheridan Blue Streak , Barska Red Dot sight, .20
Gamo Big Cat 1200, 4x32 Ruger scope, .177
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| Posted: Wed Nov 25, 2009 12:06 am |
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| kanyon |
| Silver Status Member |
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| Joined: 09 Aug 2008 |
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| Location: New Zealand |
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| Bozo wrote: |
35 years ago, when I was an active diver, the shop I frequented sold small (2 oz?) tubes of "Zip-slip", a silicone grease manufactured for the food industry. Used it on all O-rings and sealing surfaces. Just a few years ago I ran across the bag with my dive gear in it and I took a few things apart to see how they were holding up. The O-rings and edges of the diaphragms were still in good shape, the inner parts of the diaphragms were there was no need for the grease had deteriorated. I have no idea if Zio-Slip is still made or where to get it, but a year ago I was in a plumbing supply store and they had small containers of PlumberMaster, Inc silicone grease, Cat. No. 84200. I had them find the MSDS and found out it was food grade. It's been working fine on various places, including O-rings. It reminds me of Zip-Slip, but it's not identical. I think the key is to make sure whatever silicone compound you're using is food grade, there by insuring there is no petroleum at all in it.
I'm sure the PBR rubber grease recommended is good stuff, but I've never seen anything like it in the U.S. (It's castor oil based.)I asked a few mechanics I know, and they all just use brake fluid for lubrication when assembling brake parts (which is what PBR is manufactured for). I don't know what is in silicone dielectric grease or silicone shock oil, but if they aren't food grade or state specifically that they have no petroleum in them, I don't think I'd trust them.[img][/img] |
You should fined rubber grease at any surplyer of seals/o-rings etc...
roller berring outlet.....it also comes in a lanolin base...
BP make a rubber grease....
Pete |
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