Pyramyd air ??

[Gene_SC]

Paul I have bought and have on hand about every seal he makes and the answer is no.. If you notice in my pictures of the NPSS seal the I/D in much larger than what I would call a standard I/D. Why Crosman did this I have no idea. But I do know that the piston is a very nice piece of work.. The NPSS is engineered very well and built like a tank... It is a remarkably well made power plant.

[chortdraw]

Gene, you would then recomend the seal for the RWS 350 mag and have the piston made to fit if I ever  have to replace it?

[Gene_SC]

Yes I think that is the one. It is the big seal. And you need to chuck the piston up in the lathe and use the proper tool bit and turn down the retaining nipple.

[chortdraw]

Thanks Gene. I am assuming if I take it apart and de-burr and relube it I may have a chance of injuring the seal when I remove it.  Wish I would have got into these guns when I was a bit younger and learned more. Thanks for the GTA

[Mug08]

Gene:
 I know the Remington stamp is fairly new to the NPSS - when did the original Crosman NPSS come on the market? Reason I ask, I've talked to two different people at Crosman customer service -and they both said - "parts available 6 to 9 months after the gun comes out" Guess I was just wondering when that would be.
    Thanks
        Mark

[Gene_SC]

Well Mark they have been out for at least a year if not longer. I waited almost 1 1/2 years for parts on the Super Streak after it came out so I ended up just making the parts  I needed.

[Mug08]

OK -thanks for the info. No lathe - so I'll  keep checking back with them every few weeks or so.

[airiscool]

Mark,

Mug08 - 5/17/2010  7:37 PM

OK -thanks for the info. No lathe - so I'll  keep checking back with them every few weeks or so.

Any friends with a lathe, or machine shops in the area? It's not a difficult job for someone who's familar with using a machine lathe.

Paul.

[chortdraw]

Does the degree of taper also have to be changed or a matter of just the OD of the button or both?

[Mug08]

Now that I think of it - I know a guy whose shop just got a new $25,000 lathe - digital readout screens and the whole nine yards. I'm sure he'd do it for me. Might just be worth it if you can use the higher quality seals. I'll swing by there tomorrow to "check out the new machine".