by Nec » Mon Mar 29, 2010 9:33 pm
Any air-nozzle of with an internal O-ring is considered to be an "air seal" air-nozzle.
Guarder, Deep fire and some elements air nozzles are some that I know have O-ring in them although I'm sure there might be a few others.
Systema air-nozzles do NOT have o-rings and again I believe there are a few others.
There's a difference between a person who has a screwdriver and a person who knows what they are doing.