Post by
themadscientist »
https://forums.nicoclub.com/themadscientist-u2806.html
Sun Sep 21, 2003 7:35 am
Bead is just a sheet of metal with a ripple in it around the cylinder, spring tension seals it. Stopper is better, it has that and a ring around the cylinder that is compressed to improve sealing. The bead is less expensive but so is pre-baywatch Pamela Anderson, you get what you pay for.