car tyres have a shelf life of 6 yearss so it stands to reason end hoses would have an expiry date.could be just an imperfection though.

the biggest killer for tyres hoses rubber products is UV rays from the sun. If you store them, store them away from direct sunlight and weather conditions, and preferably sprinkle some chalk dust on them. 

hey dipstick, het kan ook zijn dat die nieuwe darm opzij gelegd is door een andere pompist omdat er een productiefout inzat! ik heb een paar jaar geleden een stel nieuwe 65mm darmen besteld en bij de eerste keer dat ik die darm gebruikte, kwam er een rare twist in die darm en ik heb hem ook meteen op de afvalhoop gegooid maar "bazen" gooien niet graag nieuwe darmen weg he? als het een originele schwing was geweest dan werd die vergoed maar deze was besteld in namaak. - it could easely be that the hose had a constructionfailor, wrong wind of the steel cordon, for instance. i had one some years ago that had a strange twist in it at the first use so i trew it with the garbage! bosses don't like to trow away new hoses do they?

Unfortunatly all rubber can and will weathercheck,also braiding in hoses will rot.Weather such as sun,cold,heat all are factors.Hoses can and do have weak spots,nothings perfect.This is all speculation,there is a chance a slight plug did happen (momentary) which may not have been caught.The burst rating is very low on braided hose,could be.

There are a few here that worked on the Regan library in DC,that was a tough mix.That schwing 8000 (electric) could burst 5" pipe 1200' away and never let you know.In response,bet you got that new hose.

you call it snake? so what?

Along those same lines I wonder what these people know.

http://www.lejeune.usmc.mil/2dfssg/med/files/126.htm

In case nobody read into that comes a question.Just how many booms does one see into salt water?

Road salt!