TX200 breech seal

[JP806TX]

Got some O-rings from the O-ring store. Will be testing Buna-N Nitrile 90 Durometer O-ring vs a 75 Durometer O-ring as breech seals in my TX200 (future project). Was checking online to see if this has been done...didn't find any info.
If any forum member has first hand experience please share.

 

[Orv]

JP: Just remember that there are TWO breech seals hidden in there. Orv.

 

[JP806TX]

JP: Just remember that there are TWO breech seals hidden in there. Orv.

You are absolutely correct Orv. If the set up is OEM. My experience is that the O-ring facing the breech will see the most wear. I usually only replace the top O-ring.

BTW more searching found someone using 75 durometer O-ring but no 90 durometer.

 

[Orv]

Gosh, I don't know. As inexpensive as breech seals are, I just changed them both. For the cost verses effort ratio, replacing 2 of them seems to fit my service efforts. Orv.