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Thread: Nuk 5 Hissing Sound

  1. #1

    Default Nuk 5 Hissing Sound

    My Nuk 5 hisses when I suckle it. Is this common or do I have a defective one?

  2. #2


    Normal. Mine is making that noise right now

    The sound is just air being expelled from the latex bag when you suck on it. All three Nuk 5's and all I-dunno-how-many Nuk 3's I've had have made that sound to some extent.

  3. #3


    Mine does it as well...I'm pretty sure it's normal!
    (especially since like Tygon said, the smaller ones do it to!)

  4. #4


    Maybe you have a small microscopic snake inside it? Mine doesn't hiss.

  5. #5


    Considering they're not solid and they're not a sealed system, it's not unusual to get some sound when you compress the air out of it. I guess if you maintain or completely avoid pressure on it at all times, it'll keep quiet. Doesn't bother me in the least.

  6. #6


    yeah this is normal, it only happens when the air is pushed out of the nipple itself though. I only suck on it lightly if I do at all and I never get the hissing sound.

    But you shouldn't be concerned about it at all, perfectly normal.

  7. #7


    It's normal, if you've sanitized them with a gentle 5 minute boiling they'll gurgle for a few days.

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