Put this on your hose clamp's tip to avoid accidental injuries or scratching/chafing things around it.  Might be worth using glue or something like 5200 to make sure it doesn't fall off.

Available sizes:

• 14.2mm
• 12.7mm
• 8mm

Printing

In theory, any material should work, but obviously flexible ones should perform best.  100% infill.  Will only stay in place if you put a brim around it.  No supports needed.  If you are on FDM and have time, print one at a time for best quality.