Tranfer port top seal?

[TiminNC]

Has anyone tried one of these seals from GMAC?
http://www.gmaccustomparts.com/epages/BT3197.sf/en_GB/?ObjectPath=/Shops/BT3197/Products/Topseal

[Brutuz]

Sure did Tim  

http://www.crosman-air-pistol-owners-forum.com/board/index.php?topic=721.0

Both the woods-mod and the 0-ring work good:

[youtube]https://www.youtube.com/watch?v=h2LxJnkdh0w#lq-lq2-hq-vhq-hd]Resealing a Crosman 2240 part 1[/url]

[youtube]https://www.youtube.com/watch?v=tSdwYUP5QMg#lq-lq2-hq-vhq-hd]Resealing a Crosman 2240 part 2[/url]

[1377x]

oh yeah
not gmac seal but simular
i cut a transfer port seal in half.works great

[EddieKneejerk]

I put a top seal on all of my Crosman pistols - I popped to B&Q and bought a packet of rubber seals for Ã,£1.99 and they work really well.

[TiminNC]

Thanks for the info guys.

I used a Danco #36 O-Ring from Home Depot.  The dimensions of the O-Ring were 5/16ââ,¬Â OD x 3/16ââ,¬Â ID x 1/16ââ,¬Â.  That was close to the size I needed, but that it was too big to fit in breech.  So I put the O-Ring on the transfer port and trimmed it down with a pair of scissors.  I finally got the O-Ring to fit in the breech.  After putting the airgun back together, the leak was gone.  I also gained around 20 fps too. 

At about $4 US, I may order up some seals from GMAC too.

[1377x]

Thanks for the info guys.

I used a Danco #36 O-Ring from Home Depot.  The dimensions of the O-Ring were 5/16ââ,¬Â OD x 3/16ââ,¬Â ID x 1/16ââ,¬Â.  That was close to the size I needed, but that it was too big to fit in breech.  So I put the O-Ring on the transfer port and trimmed it down with a pair of scissors.  I finally got the O-Ring to fit in the breech.  After putting the airgun back together, the leak was gone.  I also gained around 20 fps too. 

At about $4 US, I may order up some seals from GMAC too.

i did the same thing when i ran out of transfer port seals.pretty much got the same results

[akula8608]

Hello, what's the best method for cutting these o-rings in half? Thanks

[1377x]

Hello, what's the best method for cutting these o-rings in half? Thanks

i dont know about the o-rings
the transfer port gasket seal has a line through the middle of it cut along that line with a fresh razorblade.you will end up with two equal sized top seals