Graphite Yarn

[Fred Nightingale 1Participant @frednightingale1]

I have been reading Mike Robinson’s Thread on Graphite Yarn September 2009. I am currently restoring a two cylinder engine (See Pic)

There are eight seals on the pistons and valves in some cases up to an 1/8 inch thick. I am not sure what the material is, could it be Graphite String or even some type of felt. Anyone any ideas? if so where I could purchase such.

In Mike’s thread people suggest using Plumbers tape. Two points here, one it would take a lot of tape, two surely String or Felt would retain some oil, hence lubricating the shaft

 

Any Ideas please

Fred

[Fred Nightingale 1Participant @frednightingale1]

[John OlsenParticipant @johnolsen79199]

Graphited yarn is the usual, and should be available from some of the trade suppliers…we can get it here in NZ although I suppose that won’t help you much. I suspect it could be made if necessary from cotton yarn and graphite grease, I don’t think it is exactly a hi tech space age material.

 

regards

John

 

[JasonBModerator @jasonb]

As you say plumbers PTFE tape would need a lot of rolls but most of the usual ME suppliers keep PTFE gland packing in various sizes as well as graphite yarn.

 

Try Bruce engineering, Blackgates, GLR

 

Jason

[MichaelRParticipant @michaelr]

Have a look at this site Here they have gland packing of all types and size, I have no connection with this company, just a satisfied customer.

 

[Fred Nightingale 1Participant @frednightingale1]

Thanks guys i,m now spoilt for choice

 

Thanks again Fred

[KWILParticipant @kwil]

MJ Engineering has graphite yarn round and square sections.

[Richard ParsonsParticipant @richardparsons61721]

 

Gland packing. Get some COTTON string (none of your old plastic stuff) pop it in a small pot with a load of Molybdenum die Sulphide based grease which has had a few drops of STP or Wynns oil additive stirred in to it.

Get the cotton string well impregnated and use. I have made several such stuffing boxes with success.

[Sub MandrelParticipant @submandrel]

Thanks Richard,

 

I have both string and grease, but never thought of combining them.]

 

Neil

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