This if from the Mcmaster Carr catalog

Wide-Band Self-Tightening Spring Hose and Tube Clamps
     The coverage of a wide band reduces leaks while spring action
automatically compensates for hose and tube expansion and contraction. Clamps
are reusable.
     Made of carbon steel with a black zinc-rich plating that has five times
the corrosion resistance of standard zinc plating. To install, use wide band
pliers (sold separately) to open clamp ends. Next, slide clamp onto hose and
over the installed hose fitting. Finally, release pliers to secure clamp to
hose. Temperature range is -100° to +400° F. Meet SAE J1508.
     Note: When choosing a clamp, measure the outside diameter of your hose
with the fitting installed.  For  Band  Band  Pkg.
Hose OD  Width  Thick.  Qty.  Per Pkg.

 5/8"  37/64" 0.039" 10  7329K11  $3.11

 21/32"  37/64" 0.033" 10  7329K12  2.66

 3/4"  37/64" 0.051" 10  7329K13  4.42

 25/32"  37/64" 0.051" 10  7329K14  4.46

 15/16"  37/64" 0.051" 10  7329K15  4.86

1 1/16"  37/64" 0.063" 10  7329K16  5.98

1 21/32"  37/64" 0.075" 10  7329K17  8.95

1 31/32"  37/64" 0.079" 10  7329K18  10.86

Wide-Band Hose Clamp Pliers   7329K21    Each   $29.49

Bulent Aliev wrote:

Hi Paul, they are on Page 215

I think I'll pass on those. They don't look robust or secure enough.
I see no advantage over the constant torque style.

Paul Lamar
 
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