Thanks Phil, in answerOriginally Posted by Phil Russell
Michael (Vernal) kindly sent me a photo of the 'double' breech seal and I am pretty certain the mystery is solved as it looks identical to the seal for an Hw77/97. I have held an HW seal up against 2 x BS108 seals and they are remarkably similar and I can believe they occupy the same space.
So... out of interest, has anyone fitted an HW seal in a TX or even used 2 x BS108 rings in an HW77? Maybe the HW would need a shim?
And, if you are going to remove the end plug... 27mm is the size. The end is not very deep so make sure the spanner / socket fits well. I needed to heat the end with a gas torch to soften the sealant ... not very hot but hotter than can be hand held. I heated for maybe 10 or 15 seconds playing the heat around the edge of the plug and it undid easily. When I did it, the fitted O ring came out unscathed by the heat.
Cheers, Phil
1, After over 80 years of persistent misuse, my memory sometimes takes a while to respond accurately, and on reflection it is just possible that I bought the seals at a not too distant gunshop, and maybe someone sold me those knowing they would fit a TX - apologies to Chambers if that is the case. You may well have solved that mystery.
2, I have just removed the end plug, which was very tight and I had used gentle heat (after removing my nice new breech seal) before seeing your post. There was no O ring at all, but the thread had been sealed with Loctite or something similar, (hence the need for heat) in very poor condition, so I could be hot on the trail of the missing power now. Many thanks.
Plenty of time to get a new O ring (why does t5he O ring box never have the size you need?) before the stock is useable again- or maybe PTFE tape will suffice.
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