Brian, The clamps I am referring to are the ones clamping the pumps to the bracket with the name Jubilee stamped on them not the clamps on rubber hose.Dave, I believe those to be Oetiker
clamps as shown here.
Oetiker Clamps for Rubber Hose - Pegasus Auto Racing Supplies
Oetiker clamps for rubber hoses maintain clamping force due to their ability to expand as a hose assembly is subjected to temperature cycling.www.pegasusautoracing.com
Regards Brian