Model Boat Mayhem
The Shipyard ( Dry Dock ): Builds & Questions => Steam => Topic started by: muleears on July 20, 2013, 07:26:16 pm
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What is it and what is it used for? And should I be utilizing it somewhere?
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I have seen graphited string, teflon pipe thread sealant (rolled in to a string) and Viton o rings used for glands. Only needed for things like slide valve link rods or a piston rod where you have a rod passing through a housing and moving with a sliding action not a rotating motion. Hope this helps, Ian.
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I have seen graphited string, teflon pipe thread sealant (rolled in to a string) and Viton o rings used for glands. Only needed for things like slide valve link rods or a piston rod where you have a rod passing through a housing and moving with a sliding action not a rotating motion. Hope this helps, Ian.
Thanks Ian, that's very helpful, now I think I understand what it is used for. The only motors I own are a PM Research 8M (V twin, which I built and uses teflon O rings), a Krick twin (which is old and may use it) and a new Stuart Puffin (which I think uses O rings also). I have not had the Krick apart. I suppose that is something that needs investigation as it does have some years on it.
Thanks Again,
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Guys.......I think you will also find graphited twine is used as the steam joint on many valve spindle glands in both model [1/8"] tube size needle & globe valves as manufactured in the UK.......
When we consider the spindle shaft as approx. 2 mm diameter...what a perfect solution :-)) ....as the geometry for a captive o-ring would be <*< ...........Derek