A couple of months ago, I bought an LPG hand pump on eBay. It was about
1000km away, and it took me until a week ago to organise to get it from
a friend who collected it for me.

Anyway, it appears that it's been sitting for an extended period of time
and needs to be stripped down, cleaned, checked and reassembled before I
can use it. Does anyone have any suggestions on suitable or unsuitable
types of oil or grease for this application?

Obviously, the quantities involved will be very small and I'm thinking
along the lines of an LPG compatible engine oil. I'm not sure what the
seals are likely to be made of, and whether engine oil might damage
them.

Suggestions?

--
Athol
http://cust.idl.com.au/athol Linux Registered User # 254000
The state of infrastructure in New South Wales is a disgrace.
I'm a Libran Engineer. I don't argue, I discuss.

On 04 Feb 2006 23:33:01 GMT, athol wrote:

A couple of months ago, I bought an LPG hand pump on eBay. It was about
1000km away, and it took me until a week ago to organise to get it from
a friend who collected it for me.

Anyway, it appears that it's been sitting for an extended period of time
and needs to be stripped down, cleaned, checked and reassembled before I
can use it. Does anyone have any suggestions on suitable or unsuitable
types of oil or grease for this application?

Obviously, the quantities involved will be very small and I'm thinking
along the lines of an LPG compatible engine oil. I'm not sure what the
seals are likely to be made of, and whether engine oil might damage
them.

Suggestions?


My first thought was for silicone grease, but I'm really only
guessing. However, the wonder that is Google (spit) turned up this
site

http://www.efunda.com/designstandard...SC=Propane#mat

It enables you to check out chemical compatibility with O-ring
material. So selecting 'Propane' from the list will give you some
results of likely materials that the seals may be made from, and then
selecting (for example) 'Automatic Transmission Oil' will guide you as
to which of those are compatible. It may give you some idea, anyway.

--

TSH

For email, replace 'SpamOnlyToHere' with my initials

LPG info. page: www.tshargrave.co.uk
Now with added Biodiesel

Stewart Hargrave wrote:

My first thought was for silicone grease, but I'm really only
guessing.

My concern is that traces of lubricant are likely to end up in the tank
and will potentially end up in a combustion chamber...

However, the wonder that is Google (spit) turned up this site

http://www.efunda.com/designstandard...SC=Propane#mat

Interesting. So if I had any idea what the seals are made from, I
could get a good idea of what lubricants would be okay.

I suppose at least if I have to replace all of the seals, I'll know
what to use. :-)

It enables you to check out chemical compatibility with O-ring
material. So selecting 'Propane' from the list will give you some
results of likely materials that the seals may be made from, and then
selecting (for example) 'Automatic Transmission Oil' will guide you as
to which of those are compatible. It may give you some idea, anyway.

Thanks. It's a start.

--
Athol
http://cust.idl.com.au/athol Linux Registered User # 254000
The state of infrastructure in New South Wales is a disgrace.
I'm a Libran Engineer. I don't argue, I discuss.