Model Live Steam Engine Brass Piston Gland 5/16" x 26 TPI ME Thread, 5/32" Reamed Bore. Made in UK from Brass CZ121. 

I made a batch of these piston rod glands for several Stuart 10V & 10H engines that I currently have in build and thought as I had the machines set up I would make a few spare and share them with other model live steam enthusiasts.