compression rings
Reply #1 –
Well, I guess there's those Childs & Albert things...
http://www.childs-albert.com/catalog/
Fiirst page, first picture in:
http://www.childs-albert.com/catalog/pdf/rings.pdf
[COLOR="Red"]It is really quite simple how the Zero Gap Second
Ring works. It has an overlapping step gap design
(as shown) to eliminate end gap blow by, in addition
to eliminating end gap alignment forever. The
tremendous sealing ability of the ZGS Ring is very
evident when you measure a cylinder’s leak down.
A reading of 0 –1% is normal on a fresh motor.[/COLOR]