I think I'm being dumb, are they 2mm, if so are some o rings better than others.
Sorry, me again.
The seal on the piercer has blown, I know that it's 19x15, but what thickness , 1, 1.5 or 2mm? Also is it normal for these to blow so easily, I was told that was the reason that they give you two piercers, as you can alternate between the two, allowing it time to warm up ??
Cheers yet again
This is the crisis I knew had to come, Distroying the balance Id kept.
Turning around to the next set of lives, Wondering what will come next .
I think I'm being dumb, are they 2mm, if so are some o rings better than others.
This is the crisis I knew had to come, Distroying the balance Id kept.
Turning around to the next set of lives, Wondering what will come next .
If you use#016 90 Urethane o-rings then you will have no further trouble
You can get them here:http://www.sealforce.co.uk/
I have a Tau 7 with a similar issue, the o-ring in the piercing cap blows and looses all C02....after the first shot! Fitted new 0-rings direct from Sureshot, cocked the pistol to take any pressure off the hammer, but the same thing happens. This is not a case of a cold piercing cap/seal, it even happens on first use. It is an unusual design, having an o-ring slide inside the walls of the chamber (as opposed to the end of the chamber) with the expectation that it will seal successfully every time.
Might try alternate Urethane o-rings of a suitable size; I suspect a more rigid 0-ring might work better and also fill the groove better in the piercing cap.
I too suffer with torn o rings if I try to swap a gas capsule too soon on my Zastava GP45.
The size of the seal is, I think, 20mm od, 16mm id which gives a 2mm seal thickness. I am not sure what the seal material is, (not original), but if it is in contact with liquid co2 for a long time, it swells by quite a lot. This was when I tore the seal, trying to get the piercing cap back on and catching it on the edge of the cylinder.
I have also drawn a blank searching for urethane o rings, does anyone have any more information?
Cheers, Mark.
Too many guns, or not enough time?
Just measured the spare o-ring from Sureshot at 19.05mm OD with 2.44mm thickness. Sounds similar to the one you are looking for Muzzie (~19mm OD, 15mm ID). Seems to be something wrong with my browser as I can not find any part listings or urethane o-rings on the site or on their bay link.
Last edited by Aimstraight; 30-08-2016 at 09:57 PM.
How did you get on sourcing the urethane 'O' rings?
Cheers,
Mark
Too many guns, or not enough time?
See post #2 of the thread HERE.
Very helpful, thank you!
Mark.
Too many guns, or not enough time?
Tried again this morning with the spare piercer, shot twice then makes a louder shot, then it's just like dry firing.
When I go to remove the co2 it is just slowly releasing air, the oring has blown again, I would have thought that the chamber would have been full of air, just a thought , could I be over tightening the piercer??
I think I read that your not supposed to tighten too much with the tool supplied.
Any ideas....running out of o rings, co2, ...and my love for air guns.
This is the crisis I knew had to come, Distroying the balance Id kept.
Turning around to the next set of lives, Wondering what will come next .
After piercing the CO2 are you backing of the screw cap a quarter turn to allow a free flow of gas?