fix for leaking Lyman 450 sizer

[keyhole]

Success! (I hope)

I was on vacation this week so had time to work on the old 450. I wanted to replace the "Seal Plug O-Ring* 2990623" with something I could find locally, as a couple of others on this thread have done.
The first O-ring I tried was the correct inside diameter but was too large outside diameter. This prevented the seal plug from seating in the bottom of the lubrisizer casting. Another O-ring from NAPA auto parts was a smaller outside diameter. This allowed the seal plug with new O-ring to fit in the casting recess. It took a few moderate raps with a hammer (hammer striking wooden dowel placed on the deal plug). It fit snugly, which was encouraging.
This afternoon I sized 300 429421 44"s. Lube was fairly soft. There was no leakage. I am very happy about how this all turned out. Thank you to everyone who offered thoughts and comments.
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JIMinPHX- The 4500 I bought a couple of weeks ago to replace what is now the back-in-service 450 has the same issue you mentioned about the post being too short. I like your fix. Do you sell these? I don't have a lathe or the ability to make something like your design. thanks

Keyhole

[Elkins45]

The first day I got my new 4500 I sat the base on a sheet of gasket material and cut out a footprint gasket for it. When I later moved it to a different location on the bench I could see where there was some slight wear from the bottom of the threaded rod turning, but there has never been any leakage at all.

[JIMinPHX]

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JIMinPHX- The 4500 I bought a couple of weeks ago to replace what is now the back-in-service 450 has the same issue you mentioned about the post being too short. I like your fix. Do you sell these? I don't have a lathe or the ability to make something like your design. thanks

Keyhole

Sorry for the delay in responding, I just saw this now. I can make some of those up if you need them. It's not that hard. What size(s) do you need?

[ReloaderEd]

I just received "O" rings from Lyman I ordered on their website. The included an in inside seal for the plunger and rings for the newer H&I dies. while I was at it I got a new ratched handle the new one is a lot better than the original.
My Lyman is a 45 lubricator/sizer with new guts for the 4500 someone put in it before I got it.
I have used one for 55 years and hope to have at least 24-30 left. I have had at least 3 of the older units given to me. Factory parts are better than messing around with self made stuff. Be Safe.....
PS has anyone tried the lube heater for the hard lube?

[imashooter2]

PS has anyone tried the lube heater for the hard lube?

Lots of options. Mine is the press mounted to a piece of .135 steel with a yard sale flat iron sitting on it.

[HATCH]

I was given a Lyman 45. It was completely reworked prior to me getting it.
I haven't had any issues with it besides its slow
Basically I have to turn the lube screw almost every time. I can turn it a lot but then when I size the first boolit it pushes out a lot of lube under the boolit.
So I just turn it a little bit each time I put a new boolit in. It works. It isn't super fast. I plan to replace it with a Star Sizer later this year. I don't do a lot of boolits but my time is valuable so I need to do the most efficient method possible.

[keyhole]

To JIMinPHX

Thanks for getting back to me. I'll have to take stock of what size(s) I need and email you in the next few days. Hopefully that will be OK.

Thank you for your willingness to help.

Keyhole

[JIMinPHX]

Whenever you are ready, drop me a PM & we can work out the details.

Regards,
Jim