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Air Gun Home Forum Index » General Air Gun Questions and Topics » Seal leaks when switching from Crosman to Daisy Co2 Carts    View previous topic :: View next topic  Seal leaks when switching from Crosman to Daisy Co2 Carts   Posted: Mon Feb 20, 2012 2:34 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 I've been trying to save money when I can,so I bought a 5 pack of Daisy 12 gram carts for my 2300.I've never had an issue with the gun leaking while using the Crosman carts,but the Daisy's leak out overnight.I'm thinking that the seal has conformed to the Crosman cartridges,thus the problem?.I can't confirm this yet,as I have not installed a new Crosman cart since using the Daisy's....not a big deal,just wondering if it has happened to anyone else.   Posted: Mon Feb 20, 2012 5:03 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6930 Location: "Out There" It does occur- if you look at old seals of the style typically used in Crosman's (i.e. a "crush" seal) they do conform to the shape of the cartridge jammed up against them and will harden this way over time until eventually they leak with everything you try to install. It means it's likely time to replace the seal no matter what Co2 cartridges you plan to use going forward... _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront   Posted: Mon Feb 20, 2012 7:00 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 That's sound advice.....thanks.. I've always used pelgun oil on every cartridge,to keep the seals supple,but I guess the seal is just wearing out.....time to pull the valve,and check it out.   Posted: Mon Feb 20, 2012 7:17 pm oddtodd Silver Status Member Joined: 30 Dec 2008 Posts: 2029 Location: Richmond, IN USA How long have you had the 2300? Mine is 3 years old and I have never had a leak like that. I just am curious because I would like to know how long it will be before I have to replace mine. I also have a 2240 that is over 15 years old and I've yet to have to replace it. Just curious. _________________ Airguns: Two starlings talking "Larry, did you hear that? Larry?? LARRY!!!!"   Posted: Mon Feb 20, 2012 7:29 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 oddtodd wrote: How long have you had the 2300? It was purchased March of 2010.Again,this was a sudden onset issue,and started happening from the very first Daisy cart,and all four thereafter.I've had Crosman carts in it for up to three weeks with no issues.Probably not a good practice,but I like to keep it charged...I like to be ready for pests etc.It's a pain to insert a new cartridge,when the situation calls for it.   Posted: Mon Feb 20, 2012 7:37 pm AirGunEric Site Admin Joined: 20 Jan 2007 Posts: 6930 Location: "Out There" For Todd's situation- as long as the Co2 caplets you were using were the same spec. (i.e. all Crosman or all Daisy or all -whatver-) you seals have formed to shape as well- the bonus being that the 'shape' is that of whatever caplets you are using. At some point the seals will leak (when they start to disintegrate or you do change to a different caplet type). I honestly don't believe a typical Co2 "crush" type seal lasts more than a year or two before taking a "set". Of course if you remove caplets at the end of every day's shooting, perhaps it would take alot longer. _________________ ` I'd say "I care." But I'd be lying. Canadian Airgun Supplier: http://www.scopesandammo.com/storefront   Posted: Mon Feb 20, 2012 7:40 pm Mark5043 Silver Status Member Joined: 12 Apr 2009 Posts: 1379 Yup...the seal is toast.Just pulled the gas tube cap off,and took a peak down the tube,with a Mag light...It's crushed pretty bad.I'm sure there have been times I've overtightened the cap.....   Posted: Mon Feb 20, 2012 7:44 pm oddtodd Silver Status Member Joined: 30 Dec 2008 Posts: 2029 Location: Richmond, IN USA I'm like Mark and I keep mine charged too. I've always used crosman carts too. Maybe that's how I am so lucky. All I use is crosman. I stay away from anything daisy except for my son's red ryder. Well, I guess that sticking to factory parts has helped me this time. I've never had to replace a seal in any of my airguns. _________________ Airguns: Two starlings talking "Larry, did you hear that? Larry?? LARRY!!!!" 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