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View Full Version : typical o-ring life


MontanaBighorn
10-18-2008, 05:10 AM
hello. what is the typical expected life span of a properly lubricated o-ring on the hk45 barrel?
thanks,
cmdrdredd
10-18-2008, 05:37 AM
mine seems brand new and it has 6,000 rounds through.
Big Bore
10-18-2008, 09:23 AM
HK says 20,000 rounds and I have no reason to doubt it. I've yet to break one.
jca998
10-18-2008, 02:01 PM
Do you guys think that the life span is more due to rounds used or years in use?

I think the later is more reasonable as long as gun is properly cleaned and lubed is placed.
MaD HuNGaRIaN
10-18-2008, 04:27 PM
I broke one on my mk23 after 1000 rounds. I think it was my fault, because another 1000 have gone through and the replacement is holding up fine.
55spartan
10-19-2008, 11:08 PM
I need to shoot my gun more!!
TRK
11-15-2008, 08:35 PM
You will run out of ammo before you wear out the o-ring. Seriously though you probably will never need to worry about it
NiceHK
11-15-2008, 09:11 PM
But having a spare on hand, in your range bag... is not a bad idea.
Airborne Helly
11-20-2008, 06:53 PM
with the price of ammo now you probably won't ever have to worry about it.
Perseus
11-20-2008, 07:57 PM
with the price of ammo now you probably won't ever have to worry about it.

Sad but true :(
Shakey
11-21-2008, 12:19 AM
with the price of ammo now you probably won't ever have to worry about it.

Isn't that the truth.
Black45
11-21-2008, 05:54 PM
I have the original O ring on my 45 tactical barrel that is 12 years old. If you keep them lightly (key word) lubricated and clean they last a long time. I've heard of them breaking when they get dry and then tear.
G3Kurz
11-21-2008, 11:20 PM
During the US Govt testing of the MK23 MOD 0 (the first time HK used the rubber O-ring on a pistol barrel) the O-ring would last @ 20,000 rounds on average. There is little noticeable difference in accuracy even w/o the O-ring in place. Keep it lubed and it should be good to go. Replace the recoil spring on an HK45/USP45 @ 18,000 rounds especially if shooting suppressed or with +P ammo.
G3Kurz
Damian
11-22-2008, 03:26 AM
I purchased my USP Tactical .45 in 2001 and still use the original o-ring several thousand rounds later. A little oil on the o-ring after a a good cleaning makes them last a really long time.