We had a hose clamp break on a Platypus water filter.  I had one on another filter (black one) to work from, so I designed a replacement to match the original (white one).  The textured part was add using paint on fuzzy skin.  You can change/enlarge that, but don't let the fuzzy skin interfere with the sharp tip as that will affect the holding power of the teeth. 

I printed in PETG for a little more outdoor reliability but PLA should work also.  Organic supports were used to support the two overhangs.