Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Okay ... I'm not sure what to try next. 

I've tried the smallest size o-ring my local hardware store sold (a #60 1/4" OD x 1/8" ID).  Using Rog's method (for cast base Empires), I can fit the o-ring over the sight glass, but cannot get the compression nut over the o-ring.  The combination is just too large and I'm afraid I'm going to break the glass.

Anyone have some suggestions for getting this back together?  I must be missing something because I don't think it should be this difficult.  Should it?

This is all I need before I can fire up this engine for the first time.

Jeff

Paula,

I had not considered metric - I think that would work.  I will PM you shortly.

Thanks!
Jeff

  Have you considered Teflon tape twisted into a thin string and then wrapped
around the glass tubing (as much as seems needed)?  It works the same way
as a slice of silicone tubing.  I can testify to that!

Wayne

I got in the 5mm ID x 7mm OD x 1mm from Granger but while the inside/outside seemed perfect for the glass/fitting the thickness needed to be  about x2~3 more or at least with mine fittings.
I image I can just stack them up.  Also the threads on my on the male/nipple are snarfed, so it is hard to tell if I am actually getting to where it needs to be.

But after all thing trying to figure things out, I broke the glass tube. Now to figure out what size glass I need to buy.  I welcome anyone that know this, I haven't a way to measure the glass circumference

To the rescue!  I am using my Allen wrenches I am not sure if that is a good way - I'll give them a try.

thanks